21733000351 has 2 divisors, whose sum is σ = 21733000352. Its totient is φ = 21733000350.

The previous prime is 21733000327. The next prime is 21733000369. The reversal of 21733000351 is 15300033712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21733000351 - 2²³ = 21724611743 is a prime.

It is a super-2 number, since 2×21733000351² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21733000301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10866500175 + 10866500176.

It is an arithmetic number, because the mean of its divisors is an integer number (10866500176).

Almost surely, 2^21733000351 is an apocalyptic number.

21733000351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21733000351 is an equidigital number, since it uses as much as digits as its factorization.

21733000351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 25.

The spelling of 21733000351 in words is "twenty-one billion, seven hundred thirty-three million, three hundred fifty-one", and thus it is an aban number.