77764011567628 has 24 divisors (see below), whose sum is σ = 138739921567632. Its totient is φ = 38124935793984.

The previous prime is 77764011567601. The next prime is 77764011567629. The reversal of 77764011567628 is 82676511046777.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77764011567629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112381375 + ... + 113071222.

It is an arithmetic number, because the mean of its divisors is an integer number (5780830065318).

Almost surely, 2^{77764011567628} is an apocalyptic number.

It is an amenable number.

77764011567628 is a deficient number, since it is larger than the sum of its proper divisors (60975910000004).

77764011567628 is a wasteful number, since it uses less digits than its factorization.

77764011567628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225454281 (or 225454279 counting only the distinct ones).

The product of its (nonzero) digits is 165957120, while the sum is 67.

The spelling of 77764011567628 in words is "seventy-seven trillion, seven hundred sixty-four billion, eleven million, five hundred sixty-seven thousand, six hundred twenty-eight".