79503133369 has 9 divisors (see below), whose sum is σ = 87391150959. Its totient is φ = 72272756160.

The previous prime is 79503133331. The next prime is 79503133393. The reversal of 79503133369 is 96333130597.

The square root of 79503133369 is 281963.

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

It can be written as a sum of positive squares in only one way, i.e., 28195447225 + 51307686144 = 167915^2 + 226512^2 .

It is not a de Polignac number, because 79503133369 - 2³³ = 70913198777 is a prime.

It is a super-2 number, since 2×79503133369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79503133309) 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, 3088777 + ... + 3114409.

Almost surely, 2^79503133369 is an apocalyptic number.

79503133369 is the 281963-rd square number.

79503133369 is the 140982-nd centered octagonal number.

It is an amenable number.

79503133369 is a deficient number, since it is larger than the sum of its proper divisors (7888017590).

79503133369 is an frugal number, since it uses more digits than its factorization.

79503133369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51288 (or 25644 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 49.

Multiplying 79503133369 by its sum of digits (49), we get a square (3895653535081 = 1973741²).

The spelling of 79503133369 in words is "seventy-nine billion, five hundred three million, one hundred thirty-three thousand, three hundred sixty-nine".