501155005001601 has 8 divisors (see below), whose sum is σ = 673013915590240. Its totient is φ = 331699715540352.

The previous prime is 501155005001587. The next prime is 501155005001617. The reversal of 501155005001601 is 106100500551105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 501155005001601 - 2⁵ = 501155005001569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501155005001671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600905281360 + ... + 600905282193.

It is an arithmetic number, because the mean of its divisors is an integer number (84126739448780).

Almost surely, 2^{501155005001601} is an apocalyptic number.

It is an amenable number.

501155005001601 is a deficient number, since it is larger than the sum of its proper divisors (171858910588639).

501155005001601 is a wasteful number, since it uses less digits than its factorization.

501155005001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201810563695.

The product of its (nonzero) digits is 3750, while the sum is 30.

Adding to 501155005001601 its reverse (106100500551105), we get a palindrome (607255505552706).

The spelling of 501155005001601 in words is "five hundred one trillion, one hundred fifty-five billion, five million, one thousand, six hundred one".