21274133433 has 16 divisors (see below), whose sum is σ = 32420530560. Its totient is φ = 12155596416.

The previous prime is 21274133417. The next prime is 21274133449. The reversal of 21274133433 is 33433147212.

It is an interprime number because it is at equal distance from previous prime (21274133417) and next prime (21274133449).

It is not a de Polignac number, because 21274133433 - 2⁴ = 21274133417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21274133394 and 21274133403.

It is not an unprimeable number, because it can be changed into a prime (21274133453) 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, 250941 + ... + 324837.

It is an arithmetic number, because the mean of its divisors is an integer number (2026283160).

Almost surely, 2^21274133433 is an apocalyptic number.

It is an amenable number.

21274133433 is a deficient number, since it is larger than the sum of its proper divisors (11146397127).

21274133433 is a wasteful number, since it uses less digits than its factorization.

21274133433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87616.

The product of its digits is 36288, while the sum is 33.

The spelling of 21274133433 in words is "twenty-one billion, two hundred seventy-four million, one hundred thirty-three thousand, four hundred thirty-three".