78867294240 has 96 divisors (see below), whose sum is σ = 283922271360. Its totient is φ = 18026809344.

The previous prime is 78867294223. The next prime is 78867294257. The reversal of 78867294240 is 4249276887.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78867294223) and next prime (78867294257).

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11732845 + ... + 11739564.

It is an arithmetic number, because the mean of its divisors is an integer number (2957523660).

Almost surely, 2^78867294240 is an apocalyptic number.

78867294240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78867294240 is an abundant number, since it is smaller than the sum of its proper divisors (205054977120).

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

78867294240 is a wasteful number, since it uses less digits than its factorization.

78867294240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23472434 (or 23472426 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 78867294240 in words is "seventy-eight billion, eight hundred sixty-seven million, two hundred ninety-four thousand, two hundred forty".