21415362151 has 2 divisors, whose sum is σ = 21415362152. Its totient is φ = 21415362150.

The previous prime is 21415362109. The next prime is 21415362181. The reversal of 21415362151 is 15126351412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21415362151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21415362181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707681075 + 10707681076.

It is an arithmetic number, because the mean of its divisors is an integer number (10707681076).

Almost surely, 2^21415362151 is an apocalyptic number.

21415362151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21415362151 is an equidigital number, since it uses as much as digits as its factorization.

21415362151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The spelling of 21415362151 in words is "twenty-one billion, four hundred fifteen million, three hundred sixty-two thousand, one hundred fifty-one".