20426701854 has 32 divisors (see below), whose sum is σ = 45019142784. Its totient is φ = 6138972000.

The previous prime is 20426701847. The next prime is 20426701861. The reversal of 20426701854 is 45810762402.

It is an interprime number because it is at equal distance from previous prime (20426701847) and next prime (20426701861).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 3041772 + ... + 3048479.

It is an arithmetic number, because the mean of its divisors is an integer number (1406848212).

Almost surely, 2^20426701854 is an apocalyptic number.

20426701854 is an abundant number, since it is smaller than the sum of its proper divisors (24592440930).

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

20426701854 is a wasteful number, since it uses less digits than its factorization.

20426701854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090312.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 20426701854 in words is "twenty billion, four hundred twenty-six million, seven hundred one thousand, eight hundred fifty-four".