73777704556 has 12 divisors (see below), whose sum is σ = 129145283568. Its totient is φ = 36879052112.

The previous prime is 73777704527. The next prime is 73777704563. The reversal of 73777704556 is 65540777737.

It is a happy number.

It is a super-3 number, since 3×73777704556³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73777704556.

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, 2433091 + ... + 2463226.

It is an arithmetic number, because the mean of its divisors is an integer number (10762106964).

Almost surely, 2^73777704556 is an apocalyptic number.

It is an amenable number.

73777704556 is a deficient number, since it is larger than the sum of its proper divisors (55367579012).

73777704556 is a wasteful number, since it uses less digits than its factorization.

73777704556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900088 (or 4900086 counting only the distinct ones).

The product of its (nonzero) digits is 30252600, while the sum is 58.

The spelling of 73777704556 in words is "seventy-three billion, seven hundred seventy-seven million, seven hundred four thousand, five hundred fifty-six".