77399980236635 has 16 divisors (see below), whose sum is σ = 106150179822336. Its totient is φ = 53073454413408.

The previous prime is 77399980236619. The next prime is 77399980236659. The reversal of 77399980236635 is 53663208999377.

It is a cyclic number.

It is not a de Polignac number, because 77399980236635 - 2⁴ = 77399980236619 is a prime.

It is a super-2 number, since 2×77399980236635² (a number of 29 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 15 ways as a sum of consecutive naturals, for example, 14727977 + ... + 19279866.

It is an arithmetic number, because the mean of its divisors is an integer number (6634386238896).

Almost surely, 2^{77399980236635} is an apocalyptic number.

77399980236635 is a deficient number, since it is larger than the sum of its proper divisors (28750199585701).

77399980236635 is a wasteful number, since it uses less digits than its factorization.

77399980236635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34072882.

The product of its (nonzero) digits is 2777664960, while the sum is 77.

The spelling of 77399980236635 in words is "seventy-seven trillion, three hundred ninety-nine billion, nine hundred eighty million, two hundred thirty-six thousand, six hundred thirty-five".