78212579000 has 32 divisors (see below), whose sum is σ = 183017437200. Its totient is φ = 31285031200.

The previous prime is 78212578993. The next prime is 78212579009. The reversal of 78212579000 is 97521287.

It is a super-2 number, since 2×78212579000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78212579009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39105290 + ... + 39107289.

Almost surely, 2^78212579000 is an apocalyptic number.

It is an amenable number.

78212579000 is an abundant number, since it is smaller than the sum of its proper divisors (104804858200).

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

78212579000 is a wasteful number, since it uses less digits than its factorization.

78212579000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78212600 (or 78212586 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 78212579000 in words is "seventy-eight billion, two hundred twelve million, five hundred seventy-nine thousand".