126837740865 has 32 divisors (see below), whose sum is σ = 221450112000. Its totient is φ = 61480253120.

The previous prime is 126837740857. The next prime is 126837740879. The reversal of 126837740865 is 568047738621.

It is not a de Polignac number, because 126837740865 - 2³ = 126837740857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510286 + ... + 716984.

It is an arithmetic number, because the mean of its divisors is an integer number (6920316000).

Almost surely, 2^126837740865 is an apocalyptic number.

126837740865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126837740865 is a deficient number, since it is larger than the sum of its proper divisors (94612371135).

126837740865 is a wasteful number, since it uses less digits than its factorization.

126837740865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210437.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 126837740865 in words is "one hundred twenty-six billion, eight hundred thirty-seven million, seven hundred forty thousand, eight hundred sixty-five".