77564027723 has 16 divisors (see below), whose sum is σ = 95571630336. Its totient is φ = 61299776160.

The previous prime is 77564027699. The next prime is 77564027743. The reversal of 77564027723 is 32772046577.

It is a de Polignac number, because none of the positive numbers 2^k-77564027723 is a prime.

It is a super-2 number, since 2×77564027723² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77564027743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402293 + ... + 562998.

It is an arithmetic number, because the mean of its divisors is an integer number (5973226896).

Almost surely, 2^77564027723 is an apocalyptic number.

77564027723 is a deficient number, since it is larger than the sum of its proper divisors (18007602613).

77564027723 is a wasteful number, since it uses less digits than its factorization.

77564027723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966194.

The product of its (nonzero) digits is 3457440, while the sum is 50.

The spelling of 77564027723 in words is "seventy-seven billion, five hundred sixty-four million, twenty-seven thousand, seven hundred twenty-three".