21704370474 has 16 divisors (see below), whose sum is σ = 44144483040. Its totient is φ = 7112166480.

The previous prime is 21704370431. The next prime is 21704370481. The reversal of 21704370474 is 47407340712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30655537 + ... + 30656244.

It is an arithmetic number, because the mean of its divisors is an integer number (2759030190).

Almost surely, 2^21704370474 is an apocalyptic number.

21704370474 is an abundant number, since it is smaller than the sum of its proper divisors (22440112566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21704370474 is a wasteful number, since it uses less digits than its factorization.

21704370474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61311845.

The product of its (nonzero) digits is 131712, while the sum is 39.

The spelling of 21704370474 in words is "twenty-one billion, seven hundred four million, three hundred seventy thousand, four hundred seventy-four".