77400736767 has 12 divisors (see below), whose sum is σ = 115656273720. Its totient is φ = 49821163728.

The previous prime is 77400736747. The next prime is 77400736771. The reversal of 77400736767 is 76763700477.

It is not a de Polignac number, because 77400736767 - 2¹² = 77400732671 is a prime.

It is a super-2 number, since 2×77400736767² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77400736747) 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 11 ways as a sum of consecutive naturals, for example, 148277013 + ... + 148277534.

It is an arithmetic number, because the mean of its divisors is an integer number (9638022810).

Almost surely, 2^77400736767 is an apocalyptic number.

77400736767 is a deficient number, since it is larger than the sum of its proper divisors (38255536953).

77400736767 is a wasteful number, since it uses less digits than its factorization.

77400736767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296554582 (or 296554579 counting only the distinct ones).

The product of its (nonzero) digits is 7260624, while the sum is 54.

The spelling of 77400736767 in words is "seventy-seven billion, four hundred million, seven hundred thirty-six thousand, seven hundred sixty-seven".