69873797891 has 2 divisors, whose sum is σ = 69873797892. Its totient is φ = 69873797890.

The previous prime is 69873797867. The next prime is 69873797971. The reversal of 69873797891 is 19879737896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69873797891 - 2¹⁴ = 69873781507 is a prime.

It is not a weakly prime, because it can be changed into another prime (69873796891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34936898945 + 34936898946.

It is an arithmetic number, because the mean of its divisors is an integer number (34936898946).

Almost surely, 2^69873797891 is an apocalyptic number.

69873797891 is a deficient number, since it is larger than the sum of its proper divisors (1).

69873797891 is an equidigital number, since it uses as much as digits as its factorization.

69873797891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288054144, while the sum is 74.

The spelling of 69873797891 in words is "sixty-nine billion, eight hundred seventy-three million, seven hundred ninety-seven thousand, eight hundred ninety-one".