61772256426 has 16 divisors (see below), whose sum is σ = 123746061024. Its totient is φ = 20557160784.

The previous prime is 61772256407. The next prime is 61772256439. The reversal of 61772256426 is 62465227716.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8393856 + ... + 8401211.

It is an arithmetic number, because the mean of its divisors is an integer number (7734128814).

Almost surely, 2^61772256426 is an apocalyptic number.

61772256426 is an abundant number, since it is smaller than the sum of its proper divisors (61973804598).

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

61772256426 is a wasteful number, since it uses less digits than its factorization.

61772256426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795685.

The product of its digits is 1693440, while the sum is 48.

The spelling of 61772256426 in words is "sixty-one billion, seven hundred seventy-two million, two hundred fifty-six thousand, four hundred twenty-six".