20101320992 has 24 divisors (see below), whose sum is σ = 39578298732. Its totient is φ = 10049689600.

The previous prime is 20101320977. The next prime is 20101321091. The reversal of 20101320992 is 29902310102.

It can be written as a sum of positive squares in 2 ways, for example, as 18353746576 + 1747574416 = 135476^2 + 41804^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399992 + ... + 447432.

Almost surely, 2^20101320992 is an apocalyptic number.

It is an amenable number.

20101320992 is a deficient number, since it is larger than the sum of its proper divisors (19476977740).

20101320992 is a wasteful number, since it uses less digits than its factorization.

20101320992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60692 (or 60684 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 20101320992 in words is "twenty billion, one hundred one million, three hundred twenty thousand, nine hundred ninety-two".