126776838507 has 24 divisors (see below), whose sum is σ = 186230983680. Its totient is φ = 76656082800.

The previous prime is 126776838491. The next prime is 126776838527. The reversal of 126776838507 is 705838677621.

It is a happy number.

It is not a de Polignac number, because 126776838507 - 2⁴ = 126776838491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126776838527) 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 23 ways as a sum of consecutive naturals, for example, 248707 + ... + 561612.

It is an arithmetic number, because the mean of its divisors is an integer number (7759624320).

Almost surely, 2^126776838507 is an apocalyptic number.

126776838507 is a deficient number, since it is larger than the sum of its proper divisors (59454145173).

126776838507 is a wasteful number, since it uses less digits than its factorization.

126776838507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810775 (or 810764 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 126776838507 in words is "one hundred twenty-six billion, seven hundred seventy-six million, eight hundred thirty-eight thousand, five hundred seven".