72775761356 has 6 divisors (see below), whose sum is σ = 127357582380. Its totient is φ = 36387880676.

The previous prime is 72775761347. The next prime is 72775761367. The reversal of 72775761356 is 65316757727.

It is a super-2 number, since 2×72775761356² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9096970166 + ... + 9096970173.

It is an arithmetic number, because the mean of its divisors is an integer number (21226263730).

Almost surely, 2^72775761356 is an apocalyptic number.

It is an amenable number.

72775761356 is a deficient number, since it is larger than the sum of its proper divisors (54581821024).

72775761356 is a wasteful number, since it uses less digits than its factorization.

72775761356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18193940343 (or 18193940341 counting only the distinct ones).

The product of its digits is 12965400, while the sum is 56.

The spelling of 72775761356 in words is "seventy-two billion, seven hundred seventy-five million, seven hundred sixty-one thousand, three hundred fifty-six".