78148428574745 has 32 divisors (see below), whose sum is σ = 94633515648000. Its totient is φ = 61950815907264.

The previous prime is 78148428574729. The next prime is 78148428574751. The reversal of 78148428574745 is 54747582484187.

It is a cyclic number.

It is not a de Polignac number, because 78148428574745 - 2⁴ = 78148428574729 is a prime.

It is a super-2 number, since 2×78148428574745² (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 31 ways as a sum of consecutive naturals, for example, 1842971714 + ... + 1843014116.

It is an arithmetic number, because the mean of its divisors is an integer number (2957297364000).

Almost surely, 2^{78148428574745} is an apocalyptic number.

It is an amenable number.

78148428574745 is a deficient number, since it is larger than the sum of its proper divisors (16485087073255).

78148428574745 is a wasteful number, since it uses less digits than its factorization.

78148428574745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49229.

The product of its digits is 2247884800, while the sum is 74.

The spelling of 78148428574745 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred twenty-eight million, five hundred seventy-four thousand, seven hundred forty-five".