61590810474 has 12 divisors (see below), whose sum is σ = 133446756066. Its totient is φ = 20530270152.

The previous prime is 61590810469. The next prime is 61590810487. The reversal of 61590810474 is 47401809516.

61590810474 is a `hidden beast` number, since 6 + 1 + 590 + 8 + 10 + 47 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54594659025 + 6996151449 = 233655^2 + 83643^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1710855829 + ... + 1710855864.

Almost surely, 2^61590810474 is an apocalyptic number.

61590810474 is an abundant number, since it is smaller than the sum of its proper divisors (71855945592).

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

61590810474 is a wasteful number, since it uses less digits than its factorization.

61590810474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421711701 (or 3421711698 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 61590810474 in words is "sixty-one billion, five hundred ninety million, eight hundred ten thousand, four hundred seventy-four".