77099145625 has 20 divisors (see below), whose sum is σ = 96380748288. Its totient is φ = 61655210000.

The previous prime is 77099145593. The next prime is 77099145667. The reversal of 77099145625 is 52654199077.

It is a happy number.

It is not a de Polignac number, because 77099145625 - 2⁵ = 77099145593 is a prime.

It is a super-2 number, since 2×77099145625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1671624 + ... + 1717126.

Almost surely, 2^77099145625 is an apocalyptic number.

It is an amenable number.

77099145625 is a deficient number, since it is larger than the sum of its proper divisors (19281602663).

77099145625 is an equidigital number, since it uses as much as digits as its factorization.

77099145625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48234 (or 48219 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 77099145625 in words is "seventy-seven billion, ninety-nine million, one hundred forty-five thousand, six hundred twenty-five".