126318402320 has 80 divisors (see below), whose sum is σ = 321730479360. Its totient is φ = 45741696000.

The previous prime is 126318402319. The next prime is 126318402337. The reversal of 126318402320 is 23204813621.

It is a tau number, because it is divible by the number of its divisors (80).

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, 89981 + ... + 510620.

It is an arithmetic number, because the mean of its divisors is an integer number (4021630992).

Almost surely, 2^126318402320 is an apocalyptic number.

126318402320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126318402320 is an abundant number, since it is smaller than the sum of its proper divisors (195412077040).

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

126318402320 is a wasteful number, since it uses less digits than its factorization.

126318402320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600864 (or 600858 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 126318402320 in words is "one hundred twenty-six billion, three hundred eighteen million, four hundred two thousand, three hundred twenty".