21433506330 has 64 divisors (see below), whose sum is σ = 56223341568. Its totient is φ = 5205857280.

The previous prime is 21433506323. The next prime is 21433506343. The reversal of 21433506330 is 3360533412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662037 + ... + 693656.

It is an arithmetic number, because the mean of its divisors is an integer number (878489712).

Almost surely, 2^21433506330 is an apocalyptic number.

21433506330 is an abundant number, since it is smaller than the sum of its proper divisors (34789835238).

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

21433506330 is a wasteful number, since it uses less digits than its factorization.

21433506330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355751.

The product of its (nonzero) digits is 19440, while the sum is 30.

The spelling of 21433506330 in words is "twenty-one billion, four hundred thirty-three million, five hundred six thousand, three hundred thirty".