21034655426 has 8 divisors (see below), whose sum is σ = 31717177344. Its totient is φ = 10462262980.

The previous prime is 21034655357. The next prime is 21034655443. The reversal of 21034655426 is 62455643012.

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 21034655426.

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, 27531890 + ... + 27532653.

It is an arithmetic number, because the mean of its divisors is an integer number (3964647168).

Almost surely, 2^21034655426 is an apocalyptic number.

21034655426 is a deficient number, since it is larger than the sum of its proper divisors (10682521918).

21034655426 is a wasteful number, since it uses less digits than its factorization.

21034655426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55064736.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 21034655426 in words is "twenty-one billion, thirty-four million, six hundred fifty-five thousand, four hundred twenty-six".