77421545125276 has 48 divisors (see below), whose sum is σ = 147972608390880. Its totient is φ = 35151667200000.

The previous prime is 77421545125241. The next prime is 77421545125283. The reversal of 77421545125276 is 67252154512477.

It is a self number, because there is not a number n which added to its sum of digits gives 77421545125276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175697626 + ... + 176137726.

It is an arithmetic number, because the mean of its divisors is an integer number (3082762674810).

Almost surely, 2^{77421545125276} is an apocalyptic number.

It is an amenable number.

77421545125276 is a deficient number, since it is larger than the sum of its proper divisors (70551063265604).

77421545125276 is a wasteful number, since it uses less digits than its factorization.

77421545125276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444646 (or 444644 counting only the distinct ones).

The product of its digits is 32928000, while the sum is 58.

The spelling of 77421545125276 in words is "seventy-seven trillion, four hundred twenty-one billion, five hundred forty-five million, one hundred twenty-five thousand, two hundred seventy-six".