772768891169 has 16 divisors (see below), whose sum is σ = 844420680000. Its totient is φ = 701351439360.

The previous prime is 772768891127. The next prime is 772768891171. The reversal of 772768891169 is 961198867277.

It is not a de Polignac number, because 772768891169 - 2³⁶ = 704049414433 is a prime.

It is a super-2 number, since 2×772768891169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772768891369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16367054 + ... + 16414200.

It is an arithmetic number, because the mean of its divisors is an integer number (52776292500).

Almost surely, 2^772768891169 is an apocalyptic number.

It is an amenable number.

772768891169 is a deficient number, since it is larger than the sum of its proper divisors (71651788831).

772768891169 is a wasteful number, since it uses less digits than its factorization.

772768891169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49600.

The product of its digits is 128024064, while the sum is 71.

The spelling of 772768891169 in words is "seven hundred seventy-two billion, seven hundred sixty-eight million, eight hundred ninety-one thousand, one hundred sixty-nine".