77941706825 has 6 divisors (see below), whose sum is σ = 96647716494. Its totient is φ = 62353365440.

The previous prime is 77941706809. The next prime is 77941706851. The reversal of 77941706825 is 52860714977.

It can be written as a sum of positive squares in 3 ways, for example, as 1369962169 + 76571744656 = 37013^2 + 276716^2 .

It is not a de Polignac number, because 77941706825 - 2⁴ = 77941706809 is a prime.

It is a super-4 number, since 4×77941706825⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1558834112 + ... + 1558834161.

It is an arithmetic number, because the mean of its divisors is an integer number (16107952749).

Almost surely, 2^77941706825 is an apocalyptic number.

It is an amenable number.

77941706825 is a deficient number, since it is larger than the sum of its proper divisors (18706009669).

77941706825 is a wasteful number, since it uses less digits than its factorization.

77941706825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117668283 (or 3117668278 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 77941706825 in words is "seventy-seven billion, nine hundred forty-one million, seven hundred six thousand, eight hundred twenty-five".