78148426680720 has 400 divisors, whose sum is σ = 296306232330240. Its totient is φ = 18931603046400.

The previous prime is 78148426680713. The next prime is 78148426680749. The reversal of 78148426680720 is 2708662484187.

78148426680720 is a `hidden beast` number, since 7 + 8 + 1 + 484 + 2 + 6 + 6 + 80 + 72 + 0 = 666.

It is a super-2 number, since 2×78148426680720² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 100044465 + ... + 100822575.

Almost surely, 2^{78148426680720} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78148426680720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148153116165120).

78148426680720 is an abundant number, since it is smaller than the sum of its proper divisors (218157805649520).

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

78148426680720 is a wasteful number, since it uses less digits than its factorization.

78148426680720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779556 (or 779541 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 78148426680720 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred twenty-six million, six hundred eighty thousand, seven hundred twenty".