20392871498 has 16 divisors (see below), whose sum is σ = 30632037576. Its totient is φ = 10182205440.

The previous prime is 20392871497. The next prime is 20392871507. The reversal of 20392871498 is 89417829302.

It can be written as a sum of positive squares in 4 ways, for example, as 4295098369 + 16097773129 = 65537^2 + 126877^2 .

It is not an unprimeable number, because it can be changed into a prime (20392871491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7863290 + ... + 7865882.

Almost surely, 2^20392871498 is an apocalyptic number.

20392871498 is a deficient number, since it is larger than the sum of its proper divisors (10239166078).

20392871498 is a wasteful number, since it uses less digits than its factorization.

20392871498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 20392871498 in words is "twenty billion, three hundred ninety-two million, eight hundred seventy-one thousand, four hundred ninety-eight".