20388510495 has 48 divisors (see below), whose sum is σ = 35706322080. Its totient is φ = 10761424128.

The previous prime is 20388510473. The next prime is 20388510503. The reversal of 20388510495 is 59401588302.

It is not a de Polignac number, because 20388510495 - 2¹² = 20388506399 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20388510495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5359264 + ... + 5363066.

It is an arithmetic number, because the mean of its divisors is an integer number (743881710).

Almost surely, 2^20388510495 is an apocalyptic number.

20388510495 is a deficient number, since it is larger than the sum of its proper divisors (15317811585).

20388510495 is a wasteful number, since it uses less digits than its factorization.

20388510495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5013 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 20388510495 in words is "twenty billion, three hundred eighty-eight million, five hundred ten thousand, four hundred ninety-five".