78216117241400 has 48 divisors (see below), whose sum is σ = 183056793667440. Its totient is φ = 31079251872000.

The previous prime is 78216117241397. The next prime is 78216117241403. The reversal of 78216117241400 is 414271161287.

It is an interprime number because it is at equal distance from previous prime (78216117241397) and next prime (78216117241403).

It is a super-2 number, since 2×78216117241400² (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 (78216117241403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1294938629 + ... + 1294999028.

It is an arithmetic number, because the mean of its divisors is an integer number (3813683201405).

Almost surely, 2^{78216117241400} is an apocalyptic number.

It is an amenable number.

78216117241400 is an abundant number, since it is smaller than the sum of its proper divisors (104840676426040).

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

78216117241400 is a wasteful number, since it uses less digits than its factorization.

78216117241400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589937824 (or 2589937815 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 78216117241400 in words is "seventy-eight trillion, two hundred sixteen billion, one hundred seventeen million, two hundred forty-one thousand, four hundred".