78235573896 has 128 divisors (see below), whose sum is σ = 228870768000. Its totient is φ = 24693901056.

The previous prime is 78235573831. The next prime is 78235573901. The reversal of 78235573896 is 69837553287.

78235573896 is a `hidden beast` number, since 78 + 2 + 3 + 557 + 3 + 8 + 9 + 6 = 666.

It is a super-2 number, since 2×78235573896² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12460710 + ... + 12466986.

It is an arithmetic number, because the mean of its divisors is an integer number (1788052875).

Almost surely, 2^78235573896 is an apocalyptic number.

78235573896 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 78235573896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114435384000).

78235573896 is an abundant number, since it is smaller than the sum of its proper divisors (150635194104).

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

78235573896 is a wasteful number, since it uses less digits than its factorization.

78235573896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348 (or 9338 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 78235573896 in words is "seventy-eight billion, two hundred thirty-five million, five hundred seventy-three thousand, eight hundred ninety-six".