21357600302939 has 2 divisors, whose sum is σ = 21357600302940. Its totient is φ = 21357600302938.

The previous prime is 21357600302897. The next prime is 21357600303023. The reversal of 21357600302939 is 93920300675312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21357600302939 - 2³² = 21353305335643 is a prime.

It is a super-2 number, since 2×21357600302939² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21357600362939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10678800151469 + 10678800151470.

It is an arithmetic number, because the mean of its divisors is an integer number (10678800151470).

Almost surely, 2^{21357600302939} is an apocalyptic number.

21357600302939 is a deficient number, since it is larger than the sum of its proper divisors (1).

21357600302939 is an equidigital number, since it uses as much as digits as its factorization.

21357600302939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 50.

The spelling of 21357600302939 in words is "twenty-one trillion, three hundred fifty-seven billion, six hundred million, three hundred two thousand, nine hundred thirty-nine".