79357221500 has 24 divisors (see below), whose sum is σ = 173316172848. Its totient is φ = 31742888400.

The previous prime is 79357221443. The next prime is 79357221523. The reversal of 79357221500 is 512275397.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79356722 + ... + 79357721.

It is an arithmetic number, because the mean of its divisors is an integer number (7221507202).

Almost surely, 2^79357221500 is an apocalyptic number.

It is an amenable number.

79357221500 is an abundant number, since it is smaller than the sum of its proper divisors (93958951348).

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

79357221500 is a wasteful number, since it uses less digits than its factorization.

79357221500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158714462 (or 158714450 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 41.

Adding to 79357221500 its reverse (512275397), we get a palindrome (79869496897).

The spelling of 79357221500 in words is "seventy-nine billion, three hundred fifty-seven million, two hundred twenty-one thousand, five hundred".