61256479752 has 48 divisors (see below), whose sum is σ = 178664735340. Its totient is φ = 18848147328.

The previous prime is 61256479751. The next prime is 61256479759. The reversal of 61256479752 is 25797465216.

It is a happy number.

61256479752 is a `hidden beast` number, since 6 + 1 + 2 + 564 + 7 + 9 + 75 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 58006795716 + 3249684036 = 240846^2 + 57006^2 .

It is not an unprimeable number, because it can be changed into a prime (61256479751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32721543 + ... + 32723414.

Almost surely, 2^61256479752 is an apocalyptic number.

It is an amenable number.

61256479752 is an abundant number, since it is smaller than the sum of its proper divisors (117408255588).

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

61256479752 is a wasteful number, since it uses less digits than its factorization.

61256479752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65444982 (or 65444975 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 61256479752 in words is "sixty-one billion, two hundred fifty-six million, four hundred seventy-nine thousand, seven hundred fifty-two".