21469094707 has 4 divisors (see below), whose sum is σ = 22599047080. Its totient is φ = 20339142336.

The previous prime is 21469094617. The next prime is 21469094761. The reversal of 21469094707 is 70749096412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21469094707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21469094107) 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, 564976158 + ... + 564976195.

It is an arithmetic number, because the mean of its divisors is an integer number (5649761770).

Almost surely, 2^21469094707 is an apocalyptic number.

21469094707 is a deficient number, since it is larger than the sum of its proper divisors (1129952373).

21469094707 is a wasteful number, since it uses less digits than its factorization.

21469094707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129952372.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 21469094707 in words is "twenty-one billion, four hundred sixty-nine million, ninety-four thousand, seven hundred seven".