20251074164550 has 48 divisors (see below), whose sum is σ = 50223272171520. Its totient is φ = 5400221041440.

The previous prime is 20251074164543. The next prime is 20251074164603. The reversal of 20251074164550 is 5546147015202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12309531 + ... + 13857369.

It is an arithmetic number, because the mean of its divisors is an integer number (1046318170240).

Almost surely, 2^{20251074164550} is an apocalyptic number.

20251074164550 is an abundant number, since it is smaller than the sum of its proper divisors (29972198006970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20251074164550 is a wasteful number, since it uses less digits than its factorization.

20251074164550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635077 (or 1635072 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 20251074164550 in words is "twenty trillion, two hundred fifty-one billion, seventy-four million, one hundred sixty-four thousand, five hundred fifty".