77145066934 has 32 divisors (see below), whose sum is σ = 126014031360. Its totient is φ = 35418614400.

The previous prime is 77145066919. The next prime is 77145066937. The reversal of 77145066934 is 43966054177.

It is a super-2 number, since 2×77145066934² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77145066937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793294 + ... + 885214.

It is an arithmetic number, because the mean of its divisors is an integer number (3937938480).

Almost surely, 2^77145066934 is an apocalyptic number.

77145066934 is a deficient number, since it is larger than the sum of its proper divisors (48868964426).

77145066934 is a wasteful number, since it uses less digits than its factorization.

77145066934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92153 (or 92127 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 77145066934 in words is "seventy-seven billion, one hundred forty-five million, sixty-six thousand, nine hundred thirty-four".