19622172452 has 12 divisors (see below), whose sum is σ = 35176333836. Its totient is φ = 9571791360.

The previous prime is 19622172439. The next prime is 19622172467. The reversal of 19622172452 is 25427122691.

It can be written as a sum of positive squares in 2 ways, for example, as 2799044836 + 16823127616 = 52906^2 + 129704^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59823533 + ... + 59823860.

It is an arithmetic number, because the mean of its divisors is an integer number (2931361153).

Almost surely, 2^19622172452 is an apocalyptic number.

It is an amenable number.

19622172452 is a deficient number, since it is larger than the sum of its proper divisors (15554161384).

19622172452 is a wasteful number, since it uses less digits than its factorization.

19622172452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119647438 (or 119647436 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The spelling of 19622172452 in words is "nineteen billion, six hundred twenty-two million, one hundred seventy-two thousand, four hundred fifty-two".