79756537744 has 45 divisors (see below), whose sum is σ = 167360267889. Its totient is φ = 36803931840.

The previous prime is 79756537681. The next prime is 79756537753. The reversal of 79756537744 is 44773565797.

It is a happy number.

The square root of 79756537744 is 282412.

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., 11798304400 + 67958233344 = 108620^2 + 260688^2 .

It is a super-2 number, since 2×79756537744² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14682709 + ... + 14688139.

Almost surely, 2^79756537744 is an apocalyptic number.

79756537744 is the 282412-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79756537744

79756537744 is an abundant number, since it is smaller than the sum of its proper divisors (87603730145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79756537744 is an frugal number, since it uses more digits than its factorization.

79756537744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10896 (or 5446 counting only the distinct ones).

The product of its digits is 155584800, while the sum is 64.

Multiplying 79756537744 by its sum of digits (64), we get a square (5104418415616 = 2259296²).

The spelling of 79756537744 in words is "seventy-nine billion, seven hundred fifty-six million, five hundred thirty-seven thousand, seven hundred forty-four".