78309381360 has 120 divisors (see below), whose sum is σ = 282393260496. Its totient is φ = 17899284480.

The previous prime is 78309381331. The next prime is 78309381389. The reversal of 78309381360 is 6318390387.

It is an interprime number because it is at equal distance from previous prime (78309381331) and next prime (78309381389).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×78309381360² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3317721 + ... + 3341240.

Almost surely, 2^78309381360 is an apocalyptic number.

78309381360 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78309381360 is an abundant number, since it is smaller than the sum of its proper divisors (204083879136).

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

78309381360 is a wasteful number, since it uses less digits than its factorization.

78309381360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658991 (or 6658978 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 78309381360 in words is "seventy-eight billion, three hundred nine million, three hundred eighty-one thousand, three hundred sixty".