61956787291024 has 20 divisors (see below), whose sum is σ = 127102526869644. Its totient is φ = 29156135195648.

The previous prime is 61956787291013. The next prime is 61956787291033. The reversal of 61956787291024 is 42019278765916.

It can be written as a sum of positive squares in 2 ways, for example, as 24251882144400 + 37704905146624 = 4924620^2 + 6140432^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113891152837 + ... + 113891153380.

Almost surely, 2^{61956787291024} is an apocalyptic number.

It is an amenable number.

61956787291024 is an abundant number, since it is smaller than the sum of its proper divisors (65145739578620).

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

61956787291024 is a wasteful number, since it uses less digits than its factorization.

61956787291024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227782306242 (or 227782306236 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 67.

The spelling of 61956787291024 in words is "sixty-one trillion, nine hundred fifty-six billion, seven hundred eighty-seven million, two hundred ninety-one thousand, twenty-four".