8420134713779 has 16 divisors (see below), whose sum is σ = 9038093672160. Its totient is φ = 7816248422400.

The previous prime is 8420134713721. The next prime is 8420134713791. The reversal of 8420134713779 is 9773174310248.

It is a cyclic number.

It is not a de Polignac number, because 8420134713779 - 2²⁸ = 8419866278323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420134713479) 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, 6332429 + ... + 7545854.

It is an arithmetic number, because the mean of its divisors is an integer number (564880854510).

Almost surely, 2^{8420134713779} is an apocalyptic number.

8420134713779 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

8420134713779 is a deficient number, since it is larger than the sum of its proper divisors (617958958381).

8420134713779 is a wasteful number, since it uses less digits than its factorization.

8420134713779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13878790.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 8420134713779 in words is "eight trillion, four hundred twenty billion, one hundred thirty-four million, seven hundred thirteen thousand, seven hundred seventy-nine".