814620138677 has 4 divisors (see below), whose sum is σ = 850038405600. Its totient is φ = 779201871756.

The previous prime is 814620138551. The next prime is 814620138701. The reversal of 814620138677 is 776831026418.

It is a happy number.

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 814620138677 - 2¹⁸ = 814619876533 is a prime.

It is a super-2 number, since 2×814620138677² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814620138977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17709133427 + ... + 17709133472.

It is an arithmetic number, because the mean of its divisors is an integer number (212509601400).

Almost surely, 2^814620138677 is an apocalyptic number.

It is an amenable number.

814620138677 is a deficient number, since it is larger than the sum of its proper divisors (35418266923).

814620138677 is a wasteful number, since it uses less digits than its factorization.

814620138677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35418266922.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 814620138677 in words is "eight hundred fourteen billion, six hundred twenty million, one hundred thirty-eight thousand, six hundred seventy-seven".