772161721933 has 8 divisors (see below), whose sum is σ = 910937331200. Its totient is φ = 640502810640.

The previous prime is 772161721909. The next prime is 772161721979. The reversal of 772161721933 is 339127161277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 772161721933 - 2⁵ = 772161721901 is a prime.

It is a super-2 number, since 2×772161721933² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772161721033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779174258 + ... + 1779174691.

It is an arithmetic number, because the mean of its divisors is an integer number (113867166400).

Almost surely, 2^772161721933 is an apocalyptic number.

It is an amenable number.

772161721933 is a deficient number, since it is larger than the sum of its proper divisors (138775609267).

772161721933 is a wasteful number, since it uses less digits than its factorization.

772161721933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558348987.

The product of its digits is 666792, while the sum is 49.

The spelling of 772161721933 in words is "seven hundred seventy-two billion, one hundred sixty-one million, seven hundred twenty-one thousand, nine hundred thirty-three".