77421436006164 has 12 divisors (see below), whose sum is σ = 180650017347744. Its totient is φ = 25807145335384.

The previous prime is 77421436006091. The next prime is 77421436006171. The reversal of 77421436006164 is 46160063412477.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3225893166912 + ... + 3225893166935.

It is an arithmetic number, because the mean of its divisors is an integer number (15054168112312).

Almost surely, 2^{77421436006164} is an apocalyptic number.

It is an amenable number.

77421436006164 is an abundant number, since it is smaller than the sum of its proper divisors (103228581341580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77421436006164 is a wasteful number, since it uses less digits than its factorization.

77421436006164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451786333854 (or 6451786333852 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 77421436006164 in words is "seventy-seven trillion, four hundred twenty-one billion, four hundred thirty-six million, six thousand, one hundred sixty-four".