11777822431 has 16 divisors (see below), whose sum is σ = 12055680000. Its totient is φ = 11502817056.

The previous prime is 11777822369. The next prime is 11777822437. The reversal of 11777822431 is 13422877711.

It is a cyclic number.

It is not a de Polignac number, because 11777822431 - 2⁹ = 11777821919 is a prime.

It is a super-2 number, since 2×11777822431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11777822437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11335210 + ... + 11336248.

It is an arithmetic number, because the mean of its divisors is an integer number (753480000).

Almost surely, 2^11777822431 is an apocalyptic number.

11777822431 is a deficient number, since it is larger than the sum of its proper divisors (277857569).

11777822431 is a wasteful number, since it uses less digits than its factorization.

11777822431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its digits is 131712, while the sum is 43.

The spelling of 11777822431 in words is "eleven billion, seven hundred seventy-seven million, eight hundred twenty-two thousand, four hundred thirty-one".