126894645920 has 48 divisors (see below), whose sum is σ = 342615547008. Its totient is φ = 43506735360.

The previous prime is 126894645881. The next prime is 126894645923. The reversal of 126894645920 is 29546498621.

It is a super-2 number, since 2×126894645920² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (126894645923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56648276 + ... + 56650515.

It is an arithmetic number, because the mean of its divisors is an integer number (7137823896).

Almost surely, 2^126894645920 is an apocalyptic number.

126894645920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126894645920 is an abundant number, since it is smaller than the sum of its proper divisors (215720901088).

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

126894645920 is a wasteful number, since it uses less digits than its factorization.

126894645920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113298813 (or 113298805 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 126894645920 in words is "one hundred twenty-six billion, eight hundred ninety-four million, six hundred forty-five thousand, nine hundred twenty".