21462742474 has 8 divisors (see below), whose sum is σ = 32195141280. Its totient is φ = 10731028716.

The previous prime is 21462742447. The next prime is 21462742481. The reversal of 21462742474 is 47424726412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21462742474.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84054 + ... + 223585.

It is an arithmetic number, because the mean of its divisors is an integer number (4024392660).

Almost surely, 2^21462742474 is an apocalyptic number.

21462742474 is a deficient number, since it is larger than the sum of its proper divisors (10732398806).

21462742474 is a wasteful number, since it uses less digits than its factorization.

21462742474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342524.

The product of its digits is 602112, while the sum is 43.

The spelling of 21462742474 in words is "twenty-one billion, four hundred sixty-two million, seven hundred forty-two thousand, four hundred seventy-four".