79954429780 has 48 divisors (see below), whose sum is σ = 168859514880. Its totient is φ = 31799980800.

The previous prime is 79954429703. The next prime is 79954429813. The reversal of 79954429780 is 8792445997.

It is a super-3 number, since 3×79954429780³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 13592440 + ... + 13598320.

It is an arithmetic number, because the mean of its divisors is an integer number (3517906560).

Almost surely, 2^79954429780 is an apocalyptic number.

It is an amenable number.

79954429780 is an abundant number, since it is smaller than the sum of its proper divisors (88905085100).

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

79954429780 is a wasteful number, since it uses less digits than its factorization.

79954429780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640 (or 9638 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 79954429780 in words is "seventy-nine billion, nine hundred fifty-four million, four hundred twenty-nine thousand, seven hundred eighty".