12990102426 has 192 divisors, whose sum is σ = 34501828608. Its totient is φ = 3452004864.

The previous prime is 12990102401. The next prime is 12990102481. The reversal of 12990102426 is 62420109921.

12990102426 is a `hidden beast` number, since 129 + 9 + 0 + 102 + 426 = 666.

It is a super-2 number, since 2×12990102426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38546130 + ... + 38546466.

It is an arithmetic number, because the mean of its divisors is an integer number (179697024).

Almost surely, 2^12990102426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12990102426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17250914304).

12990102426 is an abundant number, since it is smaller than the sum of its proper divisors (21511726182).

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

12990102426 is a wasteful number, since it uses less digits than its factorization.

12990102426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 12990102426 in words is "twelve billion, nine hundred ninety million, one hundred two thousand, four hundred twenty-six".