20366499942 has 48 divisors (see below), whose sum is σ = 45572829120. Its totient is φ = 6569709696.

The previous prime is 20366499913. The next prime is 20366499971. The reversal of 20366499942 is 24999466302.

20366499942 is a `hidden beast` number, since 2 + 0 + 3 + 66 + 499 + 94 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20366499913) and next prime (20366499971).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59953 + ... + 210540.

It is an arithmetic number, because the mean of its divisors is an integer number (949433940).

Almost surely, 2^20366499942 is an apocalyptic number.

20366499942 is an abundant number, since it is smaller than the sum of its proper divisors (25206329178).

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

20366499942 is a wasteful number, since it uses less digits than its factorization.

20366499942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270637 (or 270634 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 20366499942 in words is "twenty billion, three hundred sixty-six million, four hundred ninety-nine thousand, nine hundred forty-two".