78451845962593 has 16 divisors (see below), whose sum is σ = 83163145665600. Its totient is φ = 73800018008640.

The previous prime is 78451845962561. The next prime is 78451845962597. The reversal of 78451845962593 is 39526954815487.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78451845962593 - 2⁵ = 78451845962561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78451845962597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15042046 + ... + 19574647.

It is an arithmetic number, because the mean of its divisors is an integer number (5197696604100).

Almost surely, 2^{78451845962593} is an apocalyptic number.

It is an amenable number.

78451845962593 is a deficient number, since it is larger than the sum of its proper divisors (4711299703007).

78451845962593 is a wasteful number, since it uses less digits than its factorization.

78451845962593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34617552.

The product of its digits is 2612736000, while the sum is 76.

The spelling of 78451845962593 in words is "seventy-eight trillion, four hundred fifty-one billion, eight hundred forty-five million, nine hundred sixty-two thousand, five hundred ninety-three".