79638209210 has 32 divisors (see below), whose sum is σ = 163955048832. Its totient is φ = 27283216320.

The previous prime is 79638209207. The next prime is 79638209279. The reversal of 79638209210 is 1290283697.

It is a happy number.

It is a super-3 number, since 3×79638209210³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353561 + ... + 533180.

It is an arithmetic number, because the mean of its divisors is an integer number (5123595276).

Almost surely, 2^79638209210 is an apocalyptic number.

79638209210 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79638209210 is an abundant number, since it is smaller than the sum of its proper divisors (84316839622).

79638209210 is a wasteful number, since it uses less digits than its factorization.

79638209210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888038.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 79638209210 in words is "seventy-nine billion, six hundred thirty-eight million, two hundred nine thousand, two hundred ten".