61000005604 has 6 divisors (see below), whose sum is σ = 106750009814. Its totient is φ = 30500002800.

The previous prime is 61000005559. The next prime is 61000005607. The reversal of 61000005604 is 40650000016.

It can be written as a sum of positive squares in only one way, i.e., 54798128100 + 6201877504 = 234090^2 + 78752^2 .

It is not an unprimeable number, because it can be changed into a prime (61000005607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7625000697 + ... + 7625000704.

Almost surely, 2^61000005604 is an apocalyptic number.

It is an amenable number.

61000005604 is a deficient number, since it is larger than the sum of its proper divisors (45750004210).

61000005604 is a wasteful number, since it uses less digits than its factorization.

61000005604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250001405 (or 15250001403 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 61000005604 in words is "sixty-one billion, five thousand, six hundred four".