78745642132751 has 8 divisors (see below), whose sum is σ = 85905156790224. Its totient is φ = 71586264128320.

The previous prime is 78745642132739. The next prime is 78745642132777. The reversal of 78745642132751 is 15723124654787.

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 78745642132751 - 2⁶ = 78745642132687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78745642132151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32956526 + ... + 35265051.

It is an arithmetic number, because the mean of its divisors is an integer number (10738144598778).

Almost surely, 2^{78745642132751} is an apocalyptic number.

78745642132751 is a deficient number, since it is larger than the sum of its proper divisors (7159514657473).

78745642132751 is a wasteful number, since it uses less digits than its factorization.

78745642132751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68326521.

The product of its digits is 79027200, while the sum is 62.

The spelling of 78745642132751 in words is "seventy-eight trillion, seven hundred forty-five billion, six hundred forty-two million, one hundred thirty-two thousand, seven hundred fifty-one".