126722591052 has 48 divisors (see below), whose sum is σ = 305761623552. Its totient is φ = 40825287360.

The previous prime is 126722591011. The next prime is 126722591057. The reversal of 126722591052 is 250195227621.

It is a junction number, because it is equal to n+sod(n) for n = 126722590995 and 126722591013.

It is not an unprimeable number, because it can be changed into a prime (126722591057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444324 + ... + 1529547.

It is an arithmetic number, because the mean of its divisors is an integer number (6370033824).

Almost surely, 2^126722591052 is an apocalyptic number.

126722591052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126722591052 is an abundant number, since it is smaller than the sum of its proper divisors (179039032500).

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

126722591052 is a wasteful number, since it uses less digits than its factorization.

126722591052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973998 (or 2973996 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 126722591052 in words is "one hundred twenty-six billion, seven hundred twenty-two million, five hundred ninety-one thousand, fifty-two".