79869000780 has 384 divisors, whose sum is σ = 271948185600. Its totient is φ = 19385568000.

The previous prime is 79869000779. The next prime is 79869000793. The reversal of 79869000780 is 8700096897.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 48026229 + ... + 48027891.

It is an arithmetic number, because the mean of its divisors is an integer number (708198400).

Almost surely, 2^79869000780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79869000780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135974092800).

79869000780 is an abundant number, since it is smaller than the sum of its proper divisors (192079184820).

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

79869000780 is a wasteful number, since it uses less digits than its factorization.

79869000780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 79869000780 in words is "seventy-nine billion, eight hundred sixty-nine million, seven hundred eighty", and thus it is an aban number.