73776427521144 has 128 divisors (see below), whose sum is σ = 185054887872000. Its totient is φ = 24510491841024.

The previous prime is 73776427521113. The next prime is 73776427521197. The reversal of 73776427521144 is 44112572467737.

It is a super-2 number, since 2×73776427521144² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28852727514 + ... + 28852730070.

It is an arithmetic number, because the mean of its divisors is an integer number (1445741311500).

Almost surely, 2^{73776427521144} is an apocalyptic number.

It is an amenable number.

73776427521144 is an abundant number, since it is smaller than the sum of its proper divisors (111278460350856).

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

73776427521144 is a wasteful number, since it uses less digits than its factorization.

73776427521144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877 (or 5873 counting only the distinct ones).

The product of its digits is 55319040, while the sum is 60.

The spelling of 73776427521144 in words is "seventy-three trillion, seven hundred seventy-six billion, four hundred twenty-seven million, five hundred twenty-one thousand, one hundred forty-four".