61880776925 has 48 divisors (see below), whose sum is σ = 85694015232. Its totient is φ = 43940966400.

The previous prime is 61880776901. The next prime is 61880776931. The reversal of 61880776925 is 52967708816.

It is a happy number.

It is not a de Polignac number, because 61880776925 - 2⁶ = 61880776861 is a prime.

It is a super-2 number, since 2×61880776925² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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 47 ways as a sum of consecutive naturals, for example, 5590997 + ... + 5602053.

It is an arithmetic number, because the mean of its divisors is an integer number (1785291984).

Almost surely, 2^61880776925 is an apocalyptic number.

It is an amenable number.

61880776925 is a deficient number, since it is larger than the sum of its proper divisors (23813238307).

61880776925 is a wasteful number, since it uses less digits than its factorization.

61880776925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11558 (or 11553 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 61880776925 in words is "sixty-one billion, eight hundred eighty million, seven hundred seventy-six thousand, nine hundred twenty-five".