78601902145 has 8 divisors (see below), whose sum is σ = 101577842856. Its totient is φ = 58044481536.

The previous prime is 78601902133. The next prime is 78601902179. The reversal of 78601902145 is 54120910687.

It can be written as a sum of positive squares in 4 ways, for example, as 58476609 + 78543425536 = 7647^2 + 280256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78601902145 - 2⁹ = 78601901633 is a prime.

It is a Duffinian number.

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, 604629952 + ... + 604630081.

It is an arithmetic number, because the mean of its divisors is an integer number (12697230357).

Almost surely, 2^78601902145 is an apocalyptic number.

It is an amenable number.

78601902145 is a deficient number, since it is larger than the sum of its proper divisors (22975940711).

78601902145 is a wasteful number, since it uses less digits than its factorization.

78601902145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209260051.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 78601902145 in words is "seventy-eight billion, six hundred one million, nine hundred two thousand, one hundred forty-five".