126994570990 has 32 divisors (see below), whose sum is σ = 263832583104. Its totient is φ = 43109894400.

The previous prime is 126994570987. The next prime is 126994571009. The reversal of 126994570990 is 99075499621.

It is a super-2 number, since 2×126994570990² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8974159 + ... + 8988298.

It is an arithmetic number, because the mean of its divisors is an integer number (8244768222).

Almost surely, 2^126994570990 is an apocalyptic number.

126994570990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126994570990 is an abundant number, since it is smaller than the sum of its proper divisors (136838012114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126994570990 is a wasteful number, since it uses less digits than its factorization.

126994570990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17962572.

The product of its (nonzero) digits is 11022480, while the sum is 61.

The spelling of 126994570990 in words is "one hundred twenty-six billion, nine hundred ninety-four million, five hundred seventy thousand, nine hundred ninety".