78732491364145 has 24 divisors (see below), whose sum is σ = 99718610331240. Its totient is φ = 59667752632320.

The previous prime is 78732491364061. The next prime is 78732491364203. The reversal of 78732491364145 is 54146319423787.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47675600181504 + 31056891182641 = 6904752^2 + 5572871^2 .

It is not a de Polignac number, because 78732491364145 - 2¹³ = 78732491355953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32902705 + ... + 35214385.

It is an arithmetic number, because the mean of its divisors is an integer number (4154942097135).

Almost surely, 2^{78732491364145} is an apocalyptic number.

It is an amenable number.

78732491364145 is a deficient number, since it is larger than the sum of its proper divisors (20986118967095).

78732491364145 is a wasteful number, since it uses less digits than its factorization.

78732491364145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330593 (or 2330574 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 64.

The spelling of 78732491364145 in words is "seventy-eight trillion, seven hundred thirty-two billion, four hundred ninety-one million, three hundred sixty-four thousand, one hundred forty-five".