21034554530 has 32 divisors (see below), whose sum is σ = 41457821760. Its totient is φ = 7620483520.

The previous prime is 21034554509. The next prime is 21034554533. The reversal of 21034554530 is 3545543012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21034554533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325844 + ... + 385023.

It is an arithmetic number, because the mean of its divisors is an integer number (1295556930).

Almost surely, 2^21034554530 is an apocalyptic number.

21034554530 is a deficient number, since it is larger than the sum of its proper divisors (20423267230).

21034554530 is a wasteful number, since it uses less digits than its factorization.

21034554530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711154.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 21034554530 in words is "twenty-one billion, thirty-four million, five hundred fifty-four thousand, five hundred thirty".