126285209897904 has 30 divisors (see below), whose sum is σ = 353423191589676. Its totient is φ = 42095069965920.

The previous prime is 126285209897893. The next prime is 126285209897941. The reversal of 126285209897904 is 409798902582621.

126285209897904 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 8 + 520 + 9 + 8 + 9 + 7 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 438490312002 + ... + 438490312289.

Almost surely, 2^{126285209897904} is an apocalyptic number.

It is an amenable number.

126285209897904 is an abundant number, since it is smaller than the sum of its proper divisors (227137981691772).

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

126285209897904 is a wasteful number, since it uses less digits than its factorization.

126285209897904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876980624305 (or 876980624296 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 72.

The spelling of 126285209897904 in words is "one hundred twenty-six trillion, two hundred eighty-five billion, two hundred nine million, eight hundred ninety-seven thousand, nine hundred four".