20426753670 has 16 divisors (see below), whose sum is σ = 49024208880. Its totient is φ = 5447134304.

The previous prime is 20426753657. The next prime is 20426753671. The reversal of 20426753670 is 7635762402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426753671) 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, 340445865 + ... + 340445924.

It is an arithmetic number, because the mean of its divisors is an integer number (3064013055).

Almost surely, 2^20426753670 is an apocalyptic number.

20426753670 is an abundant number, since it is smaller than the sum of its proper divisors (28597455210).

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

20426753670 is a wasteful number, since it uses less digits than its factorization.

20426753670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680891799.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 20426753670 in words is "twenty billion, four hundred twenty-six million, seven hundred fifty-three thousand, six hundred seventy".