20799400174 has 16 divisors (see below), whose sum is σ = 35671855968. Its totient is φ = 8910093312.

The previous prime is 20799400169. The next prime is 20799400207. The reversal of 20799400174 is 47100499702.

It is a self number, because there is not a number n which added to its sum of digits gives 20799400174.

It is a congruent number.

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, 294987 + ... + 358630.

It is an arithmetic number, because the mean of its divisors is an integer number (2229490998).

Almost surely, 2^20799400174 is an apocalyptic number.

20799400174 is a deficient number, since it is larger than the sum of its proper divisors (14872455794).

20799400174 is a wasteful number, since it uses less digits than its factorization.

20799400174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655899.

The product of its (nonzero) digits is 127008, while the sum is 43.

Adding to 20799400174 its reverse (47100499702), we get a palindrome (67899899876).

The spelling of 20799400174 in words is "twenty billion, seven hundred ninety-nine million, four hundred thousand, one hundred seventy-four".