718989975877 has 4 divisors (see below), whose sum is σ = 719215579936. Its totient is φ = 718764371820.

The previous prime is 718989975871. The next prime is 718989975917. The reversal of 718989975877 is 778579989817.

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 718989975877 - 2¹⁵ = 718989943109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 718989975794 and 718989975803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718989975871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112797249 + ... + 112803622.

It is an arithmetic number, because the mean of its divisors is an integer number (179803894984).

Almost surely, 2^718989975877 is an apocalyptic number.

It is an amenable number.

718989975877 is a deficient number, since it is larger than the sum of its proper divisors (225604059).

718989975877 is a wasteful number, since it uses less digits than its factorization.

718989975877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225604058.

The product of its digits is 4480842240, while the sum is 85.

The spelling of 718989975877 in words is "seven hundred eighteen billion, nine hundred eighty-nine million, nine hundred seventy-five thousand, eight hundred seventy-seven".