78216115027480 has 32 divisors (see below), whose sum is σ = 175990687603200. Its totient is φ = 31285658670336.

The previous prime is 78216115027471. The next prime is 78216115027483. The reversal of 78216115027480 is 8472051161287.

It is a super-2 number, since 2×78216115027480² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78216115027483) 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, 22993752 + ... + 26175271.

It is an arithmetic number, because the mean of its divisors is an integer number (5499708987600).

Almost surely, 2^{78216115027480} is an apocalyptic number.

It is an amenable number.

78216115027480 is an abundant number, since it is smaller than the sum of its proper divisors (97774572575720).

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

78216115027480 is a wasteful number, since it uses less digits than its factorization.

78216115027480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49208803 (or 49208799 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 78216115027480 in words is "seventy-eight trillion, two hundred sixteen billion, one hundred fifteen million, twenty-seven thousand, four hundred eighty".