20463951942 has 192 divisors, whose sum is σ = 55151136768. Its totient is φ = 5563728000.

The previous prime is 20463951923. The next prime is 20463951961. The reversal of 20463951942 is 24915936402.

20463951942 is a `hidden beast` number, since 2 + 0 + 4 + 639 + 5 + 1 + 9 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20463951923) and next prime (20463951961).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6431592 + ... + 6434772.

It is an arithmetic number, because the mean of its divisors is an integer number (287245504).

Almost surely, 2^20463951942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20463951942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27575568384).

20463951942 is an abundant number, since it is smaller than the sum of its proper divisors (34687184826).

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

20463951942 is a wasteful number, since it uses less digits than its factorization.

20463951942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 20463951942 in words is "twenty billion, four hundred sixty-three million, nine hundred fifty-one thousand, nine hundred forty-two".