20397411490 has 16 divisors (see below), whose sum is σ = 36745188480. Its totient is φ = 8152331760.

The previous prime is 20397411479. The next prime is 20397411509. The reversal of 20397411490 is 9411479302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816180 + ... + 840799.

It is an arithmetic number, because the mean of its divisors is an integer number (2296574280).

Almost surely, 2^20397411490 is an apocalyptic number.

20397411490 is a deficient number, since it is larger than the sum of its proper divisors (16347776990).

20397411490 is a wasteful number, since it uses less digits than its factorization.

20397411490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658217.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 20397411490 in words is "twenty billion, three hundred ninety-seven million, four hundred eleven thousand, four hundred ninety".