78145570172704 has 48 divisors (see below), whose sum is σ = 156380883857856. Its totient is φ = 38429869420800.

The previous prime is 78145570172629. The next prime is 78145570172729. The reversal of 78145570172704 is 40727107554187.

78145570172704 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78145570172704² (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 7 ways as a sum of consecutive naturals, for example, 30522669 + ... + 32983699.

It is an arithmetic number, because the mean of its divisors is an integer number (3257935080372).

Almost surely, 2^{78145570172704} is an apocalyptic number.

It is an amenable number.

78145570172704 is an abundant number, since it is smaller than the sum of its proper divisors (78235313685152).

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

78145570172704 is a wasteful number, since it uses less digits than its factorization.

78145570172704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477369 (or 2477361 counting only the distinct ones).

The product of its (nonzero) digits is 15366400, while the sum is 58.

The spelling of 78145570172704 in words is "seventy-eight trillion, one hundred forty-five billion, five hundred seventy million, one hundred seventy-two thousand, seven hundred four".