61256444274 has 24 divisors (see below), whose sum is σ = 132763147920. Its totient is φ = 20412529848.

The previous prime is 61256444273. The next prime is 61256444281. The reversal of 61256444274 is 47244465216.

It is a happy number.

61256444274 is a `hidden beast` number, since 6 + 12 + 564 + 4 + 4 + 2 + 74 = 666.

It is not an unprimeable number, because it can be changed into a prime (61256444273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463452 + ... + 580775.

It is an arithmetic number, because the mean of its divisors is an integer number (5531797830).

Almost surely, 2^61256444274 is an apocalyptic number.

61256444274 is an abundant number, since it is smaller than the sum of its proper divisors (71506703646).

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

61256444274 is a wasteful number, since it uses less digits than its factorization.

61256444274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047494 (or 1047491 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The spelling of 61256444274 in words is "sixty-one billion, two hundred fifty-six million, four hundred forty-four thousand, two hundred seventy-four".