69204457421 has 4 divisors (see below), whose sum is σ = 75495771744. Its totient is φ = 62913143100.

The previous prime is 69204457403. The next prime is 69204457453. The reversal of 69204457421 is 12475440296.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69204457421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69204357421) 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, 3145657145 + ... + 3145657166.

It is an arithmetic number, because the mean of its divisors is an integer number (18873942936).

Almost surely, 2^69204457421 is an apocalyptic number.

It is an amenable number.

69204457421 is a deficient number, since it is larger than the sum of its proper divisors (6291314323).

69204457421 is a wasteful number, since it uses less digits than its factorization.

69204457421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291314322.

The product of its (nonzero) digits is 483840, while the sum is 44.

It can be divided in two parts, 69204 and 457421, that added together give a palindrome (526625).

The spelling of 69204457421 in words is "sixty-nine billion, two hundred four million, four hundred fifty-seven thousand, four hundred twenty-one".