78774584896 has 112 divisors (see below), whose sum is σ = 196228776960. Its totient is φ = 30592995840.

The previous prime is 78774584831. The next prime is 78774584897. The reversal of 78774584896 is 69848547787.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×78774584896² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78774584897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5410 + ... + 396961.

Almost surely, 2^78774584896 is an apocalyptic number.

78774584896 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78774584896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98114388480).

78774584896 is an abundant number, since it is smaller than the sum of its proper divisors (117454192064).

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

78774584896 is a wasteful number, since it uses less digits than its factorization.

78774584896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402432 (or 402422 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 73.

The spelling of 78774584896 in words is "seventy-eight billion, seven hundred seventy-four million, five hundred eighty-four thousand, eight hundred ninety-six".