20392136401 has 36 divisors (see below), whose sum is σ = 25728395292. Its totient is φ = 16108170624.

The previous prime is 20392136399. The next prime is 20392136431. The reversal of 20392136401 is 10463129302.

It can be written as a sum of positive squares in 6 ways, for example, as 14288400 + 20377848001 = 3780^2 + 142751^2 .

It is not a de Polignac number, because 20392136401 - 2¹ = 20392136399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20392136431) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6267091 + ... + 6270343.

It is an arithmetic number, because the mean of its divisors is an integer number (714677647).

Almost surely, 2^20392136401 is an apocalyptic number.

It is an amenable number.

20392136401 is a deficient number, since it is larger than the sum of its proper divisors (5336258891).

20392136401 is a wasteful number, since it uses less digits than its factorization.

20392136401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050 (or 4030 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 20392136401 in words is "twenty billion, three hundred ninety-two million, one hundred thirty-six thousand, four hundred one".