21274740003 has 8 divisors (see below), whose sum is σ = 30945076416. Its totient is φ = 12893781800.

The previous prime is 21274739999. The next prime is 21274740023. The reversal of 21274740003 is 30004747212.

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

It is a cyclic number.

It is not a de Polignac number, because 21274740003 - 2² = 21274739999 is a prime.

It is a super-2 number, since 2×21274740003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21274740023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322344513 + ... + 322344578.

It is an arithmetic number, because the mean of its divisors is an integer number (3868134552).

Almost surely, 2^21274740003 is an apocalyptic number.

21274740003 is a deficient number, since it is larger than the sum of its proper divisors (9670336413).

21274740003 is a wasteful number, since it uses less digits than its factorization.

21274740003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644689105.

The product of its (nonzero) digits is 9408, while the sum is 30.

The spelling of 21274740003 in words is "twenty-one billion, two hundred seventy-four million, seven hundred forty thousand, three".