78522696000 has 840 divisors, whose sum is σ = 338055682536. Its totient is φ = 17940787200.

The previous prime is 78522695981. The next prime is 78522696011. The reversal of 78522696000 is 69622587.

78522696000 is a `hidden beast` number, since 7 + 8 + 522 + 69 + 60 + 0 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 561121344 + 77961574656 = 23688^2 + 279216^2 .

It is a tau number, because it is divible by the number of its divisors (840).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 31750764 + ... + 31753236.

Almost surely, 2^78522696000 is an apocalyptic number.

78522696000 is a gapful number since it is divisible by the number (70) 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 78522696000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169027841268).

78522696000 is an abundant number, since it is smaller than the sum of its proper divisors (259532986536).

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

78522696000 is a wasteful number, since it uses less digits than its factorization.

78522696000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 78522696000 in words is "seventy-eight billion, five hundred twenty-two million, six hundred ninety-six thousand".