84279920623 has 4 divisors (see below), whose sum is σ = 85661558728. Its totient is φ = 82898282520.

The previous prime is 84279920609. The next prime is 84279920633. The reversal of 84279920623 is 32602997248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84279920623 - 2²⁹ = 83743049711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84279920603) 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, 690818961 + ... + 690819082.

It is an arithmetic number, because the mean of its divisors is an integer number (21415389682).

Almost surely, 2^84279920623 is an apocalyptic number.

84279920623 is a deficient number, since it is larger than the sum of its proper divisors (1381638105).

84279920623 is a wasteful number, since it uses less digits than its factorization.

84279920623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381638104.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 84279920623 in words is "eighty-four billion, two hundred seventy-nine million, nine hundred twenty thousand, six hundred twenty-three".