77767023537 has 96 divisors (see below), whose sum is σ = 136435200000. Its totient is φ = 43643632032.

The previous prime is 77767023461. The next prime is 77767023601. The reversal of 77767023537 is 73532076777.

It is not a de Polignac number, because 77767023537 - 2¹² = 77767019441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77767023337) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20797014 + ... + 20800752.

It is an arithmetic number, because the mean of its divisors is an integer number (1421200000).

Almost surely, 2^77767023537 is an apocalyptic number.

It is an amenable number.

77767023537 is a deficient number, since it is larger than the sum of its proper divisors (58668176463).

77767023537 is a wasteful number, since it uses less digits than its factorization.

77767023537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040 (or 4027 counting only the distinct ones).

The product of its (nonzero) digits is 9075780, while the sum is 54.

The spelling of 77767023537 in words is "seventy-seven billion, seven hundred sixty-seven million, twenty-three thousand, five hundred thirty-seven".