15822117796 has 27 divisors (see below), whose sum is σ = 27993577059. Its totient is φ = 7824895488.

The previous prime is 15822117793. The next prime is 15822117827. The reversal of 15822117796 is 69771122851.

The square root of 15822117796 is 125786.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9779232100 + 6042885696 = 98890^2 + 77736^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15822117793) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27421060 + ... + 27421636.

Almost surely, 2^15822117796 is an apocalyptic number.

15822117796 is the 125786-th square number.

It is an amenable number.

15822117796 is a deficient number, since it is larger than the sum of its proper divisors (12171459263).

15822117796 is an frugal number, since it uses more digits than its factorization.

15822117796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 688 counting only the distinct ones).

The product of its digits is 423360, while the sum is 49.

Multiplying 15822117796 by its sum of digits (49), we get a square (775283772004 = 880502²).

The spelling of 15822117796 in words is "fifteen billion, eight hundred twenty-two million, one hundred seventeen thousand, seven hundred ninety-six".