69421792091 has 4 divisors (see below), whose sum is σ = 69456732072. Its totient is φ = 69386852112.

The previous prime is 69421792021. The next prime is 69421792109. The reversal of 69421792091 is 19029712496.

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 69421792091 - 2²² = 69417597787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69421792021) 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, 17467010 + ... + 17470983.

It is an arithmetic number, because the mean of its divisors is an integer number (17364183018).

Almost surely, 2^69421792091 is an apocalyptic number.

69421792091 is a deficient number, since it is larger than the sum of its proper divisors (34939981).

69421792091 is a wasteful number, since it uses less digits than its factorization.

69421792091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34939980.

The product of its (nonzero) digits is 489888, while the sum is 50.

The spelling of 69421792091 in words is "sixty-nine billion, four hundred twenty-one million, seven hundred ninety-two thousand, ninety-one".