61772754975 has 12 divisors (see below), whose sum is σ = 102130955016. Its totient is φ = 32945469280.

The previous prime is 61772754961. The next prime is 61772754997. The reversal of 61772754975 is 57945727716.

It is not a de Polignac number, because 61772754975 - 2⁵ = 61772754943 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 411818292 + ... + 411818441.

It is an arithmetic number, because the mean of its divisors is an integer number (8510912918).

Almost surely, 2^61772754975 is an apocalyptic number.

61772754975 is a deficient number, since it is larger than the sum of its proper divisors (40358200041).

61772754975 is a wasteful number, since it uses less digits than its factorization.

61772754975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823636746 (or 823636741 counting only the distinct ones).

The product of its digits is 25930800, while the sum is 60.

The spelling of 61772754975 in words is "sixty-one billion, seven hundred seventy-two million, seven hundred fifty-four thousand, nine hundred seventy-five".