20497937495 has 72 divisors (see below), whose sum is σ = 29783860704. Its totient is φ = 13500480000.

The previous prime is 20497937437. The next prime is 20497937497. The reversal of 20497937495 is 59473979402.

It is not a de Polignac number, because 20497937495 - 2¹⁴ = 20497921111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20497937497) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 29240645 + ... + 29241345.

It is an arithmetic number, because the mean of its divisors is an integer number (413664732).

Almost surely, 2^20497937495 is an apocalyptic number.

20497937495 is a deficient number, since it is larger than the sum of its proper divisors (9285923209).

20497937495 is an equidigital number, since it uses as much as digits as its factorization.

20497937495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 59.

The spelling of 20497937495 in words is "twenty billion, four hundred ninety-seven million, nine hundred thirty-seven thousand, four hundred ninety-five".