21621334060474 has 8 divisors (see below), whose sum is σ = 32432306534208. Its totient is φ = 10810565215740.

The previous prime is 21621334060439. The next prime is 21621334060541. The reversal of 21621334060474 is 47406043312612.

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

It is a super-2 number, since 2×21621334060474² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21621334060474.

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, 50641522 + ... + 51066685.

It is an arithmetic number, because the mean of its divisors is an integer number (4054038316776).

Almost surely, 2^{21621334060474} is an apocalyptic number.

21621334060474 is a deficient number, since it is larger than the sum of its proper divisors (10810972473734).

21621334060474 is a wasteful number, since it uses less digits than its factorization.

21621334060474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101814500.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 21621334060474 in words is "twenty-one trillion, six hundred twenty-one billion, three hundred thirty-four million, sixty thousand, four hundred seventy-four".