126087790491 has 24 divisors (see below), whose sum is σ = 196160380416. Its totient is φ = 77583064320.

The previous prime is 126087790463. The next prime is 126087790541. The reversal of 126087790491 is 194097780621.

126087790491 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 87 + 79 + 0 + 491 = 666.

It is not a de Polignac number, because 126087790491 - 2⁵ = 126087790459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126087790441) 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, 972211 + ... + 1094243.

It is an arithmetic number, because the mean of its divisors is an integer number (8173349184).

Almost surely, 2^126087790491 is an apocalyptic number.

126087790491 is a deficient number, since it is larger than the sum of its proper divisors (70072589925).

126087790491 is a wasteful number, since it uses less digits than its factorization.

126087790491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130883 (or 130880 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 126087790491 in words is "one hundred twenty-six billion, eighty-seven million, seven hundred ninety thousand, four hundred ninety-one".