126690976791 has 24 divisors (see below), whose sum is σ = 184047215040. Its totient is φ = 83977526976.

The previous prime is 126690976787. The next prime is 126690976801. The reversal of 126690976791 is 197679096621.

It is not a de Polignac number, because 126690976791 - 2² = 126690976787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126690976771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1359505 + ... + 1449701.

It is an arithmetic number, because the mean of its divisors is an integer number (7668633960).

Almost surely, 2^126690976791 is an apocalyptic number.

126690976791 is a deficient number, since it is larger than the sum of its proper divisors (57356238249).

126690976791 is a wasteful number, since it uses less digits than its factorization.

126690976791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91095 (or 91092 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 63.

The spelling of 126690976791 in words is "one hundred twenty-six billion, six hundred ninety million, nine hundred seventy-six thousand, seven hundred ninety-one".