78980345701 has 4 divisors (see below), whose sum is σ = 79044926112. Its totient is φ = 78915765292.

The previous prime is 78980345663. The next prime is 78980345737. The reversal of 78980345701 is 10754308987.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78980345701 - 2²⁵ = 78946791269 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 (78980345791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32288371 + ... + 32290816.

It is an arithmetic number, because the mean of its divisors is an integer number (19761231528).

Almost surely, 2^78980345701 is an apocalyptic number.

It is an amenable number.

78980345701 is a deficient number, since it is larger than the sum of its proper divisors (64580411).

78980345701 is a wasteful number, since it uses less digits than its factorization.

78980345701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64580410.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 78980345701 in words is "seventy-eight billion, nine hundred eighty million, three hundred forty-five thousand, seven hundred one".