20544400602 has 32 divisors (see below), whose sum is σ = 49804608960. Its totient is φ = 6225575760.

The previous prime is 20544400573. The next prime is 20544400651. The reversal of 20544400602 is 20600444502.

20544400602 is a `hidden beast` number, since 2 + 0 + 54 + 4 + 4 + 0 + 0 + 602 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 17292673 + ... + 17293860.

It is an arithmetic number, because the mean of its divisors is an integer number (1556394030).

Almost surely, 2^20544400602 is an apocalyptic number.

20544400602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20544400602 is an abundant number, since it is smaller than the sum of its proper divisors (29260208358).

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

20544400602 is a wasteful number, since it uses less digits than its factorization.

20544400602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34586555 (or 34586549 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 20544400602 in words is "twenty billion, five hundred forty-four million, four hundred thousand, six hundred two".