20661093624 has 32 divisors (see below), whose sum is σ = 51668496000. Its totient is φ = 6884929632.

The previous prime is 20661093619. The next prime is 20661093641. The reversal of 20661093624 is 42639016602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50034 + ... + 209345.

It is an arithmetic number, because the mean of its divisors is an integer number (1614640500).

Almost surely, 2^20661093624 is an apocalyptic number.

20661093624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20661093624 is an abundant number, since it is smaller than the sum of its proper divisors (31007402376).

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

20661093624 is a wasteful number, since it uses less digits than its factorization.

20661093624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262707 (or 262703 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 20661093624 in words is "twenty billion, six hundred sixty-one million, ninety-three thousand, six hundred twenty-four".