20401333392 has 80 divisors (see below), whose sum is σ = 57516443712. Its totient is φ = 6179880960.

The previous prime is 20401333373. The next prime is 20401333417. The reversal of 20401333392 is 29333310402.

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, 1819708 + ... + 1830884.

Almost surely, 2^20401333392 is an apocalyptic number.

20401333392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20401333392 is an abundant number, since it is smaller than the sum of its proper divisors (37115110320).

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

20401333392 is a wasteful number, since it uses less digits than its factorization.

20401333392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14656 (or 14650 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 20401333392 its reverse (29333310402), we get a palindrome (49734643794).

The spelling of 20401333392 in words is "twenty billion, four hundred one million, three hundred thirty-three thousand, three hundred ninety-two".