20402641926 has 24 divisors (see below), whose sum is σ = 44381852424. Its totient is φ = 6773784000.

The previous prime is 20402641913. The next prime is 20402641937. The reversal of 20402641926 is 62914620402.

20402641926 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 2 + 641 + 9 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2253411 + ... + 2262446.

It is an arithmetic number, because the mean of its divisors is an integer number (1849243851).

Almost surely, 2^20402641926 is an apocalyptic number.

20402641926 is an abundant number, since it is smaller than the sum of its proper divisors (23979210498).

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

20402641926 is a wasteful number, since it uses less digits than its factorization.

20402641926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516116 (or 4516113 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 20402641926 in words is "twenty billion, four hundred two million, six hundred forty-one thousand, nine hundred twenty-six".