126971572090 has 16 divisors (see below), whose sum is σ = 249325996320. Its totient is φ = 46171480720.

The previous prime is 126971572009. The next prime is 126971572093. The reversal of 126971572090 is 90275179621.

It is a happy number.

It is a super-2 number, since 2×126971572090² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126971572093) 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 7 ways as a sum of consecutive naturals, for example, 577143400 + ... + 577143619.

It is an arithmetic number, because the mean of its divisors is an integer number (15582874770).

Almost surely, 2^126971572090 is an apocalyptic number.

126971572090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126971572090 is a deficient number, since it is larger than the sum of its proper divisors (122354424230).

126971572090 is a wasteful number, since it uses less digits than its factorization.

126971572090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154287037.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 126971572090 in words is "one hundred twenty-six billion, nine hundred seventy-one million, five hundred seventy-two thousand, ninety".