77800431225464 has 96 divisors (see below), whose sum is σ = 149877699388560. Its totient is φ = 37860871434240.

The previous prime is 77800431225449. The next prime is 77800431225479. The reversal of 77800431225464 is 46452213400877.

It is an interprime number because it is at equal distance from previous prime (77800431225449) and next prime (77800431225479).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16164641522 + ... + 16164646334.

Almost surely, 2^{77800431225464} is an apocalyptic number.

It is an amenable number.

77800431225464 is a deficient number, since it is larger than the sum of its proper divisors (72077268163096).

77800431225464 is a wasteful number, since it uses less digits than its factorization.

77800431225464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521 (or 7476 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 77800431225464 in words is "seventy-seven trillion, eight hundred billion, four hundred thirty-one million, two hundred twenty-five thousand, four hundred sixty-four".