69428293921 has 8 divisors (see below), whose sum is σ = 81034848000. Its totient is φ = 58243796448.

The previous prime is 69428293903. The next prime is 69428293939. The reversal of 69428293921 is 12939282496.

It is an interprime number because it is at equal distance from previous prime (69428293903) and next prime (69428293939).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69428293921 - 2²¹ = 69426196769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69428293721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105513796 + ... + 105514453.

It is an arithmetic number, because the mean of its divisors is an integer number (10129356000).

Almost surely, 2^69428293921 is an apocalyptic number.

It is an amenable number.

69428293921 is a deficient number, since it is larger than the sum of its proper divisors (11606554079).

69428293921 is a wasteful number, since it uses less digits than its factorization.

69428293921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211028303.

The product of its digits is 3359232, while the sum is 55.

The spelling of 69428293921 in words is "sixty-nine billion, four hundred twenty-eight million, two hundred ninety-three thousand, nine hundred twenty-one".