21374737230 has 128 divisors (see below), whose sum is σ = 67323985920. Its totient is φ = 4207731840.

The previous prime is 21374737213. The next prime is 21374737247. The reversal of 21374737230 is 3273747312.

It is an interprime number because it is at equal distance from previous prime (21374737213) and next prime (21374737247).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199614 + ... + 287393.

It is an arithmetic number, because the mean of its divisors is an integer number (525968640).

Almost surely, 2^21374737230 is an apocalyptic number.

21374737230 is an abundant number, since it is smaller than the sum of its proper divisors (45949248690).

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

21374737230 is a wasteful number, since it uses less digits than its factorization.

21374737230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487054.

The product of its (nonzero) digits is 148176, while the sum is 39.

The spelling of 21374737230 in words is "twenty-one billion, three hundred seventy-four million, seven hundred thirty-seven thousand, two hundred thirty".