77137314725 has 24 divisors (see below), whose sum is σ = 98758107648. Its totient is φ = 59705697600.

The previous prime is 77137314721. The next prime is 77137314791. The reversal of 77137314725 is 52741373177.

It is not a de Polignac number, because 77137314725 - 2² = 77137314721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77137314725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77137314721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4670432 + ... + 4686918.

It is an arithmetic number, because the mean of its divisors is an integer number (4114921152).

Almost surely, 2^77137314725 is an apocalyptic number.

It is an amenable number.

77137314725 is a deficient number, since it is larger than the sum of its proper divisors (21620792923).

77137314725 is a wasteful number, since it uses less digits than its factorization.

77137314725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22565 (or 22560 counting only the distinct ones).

The product of its digits is 864360, while the sum is 47.

The spelling of 77137314725 in words is "seventy-seven billion, one hundred thirty-seven million, three hundred fourteen thousand, seven hundred twenty-five".