21700087240627 has 2 divisors, whose sum is σ = 21700087240628. Its totient is φ = 21700087240626.

The previous prime is 21700087240613. The next prime is 21700087240661. The reversal of 21700087240627 is 72604278000712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21700087240627 - 2¹¹ = 21700087238579 is a prime.

It is not a weakly prime, because it can be changed into another prime (21700087240607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850043620313 + 10850043620314.

It is an arithmetic number, because the mean of its divisors is an integer number (10850043620314).

Almost surely, 2^{21700087240627} is an apocalyptic number.

21700087240627 is a deficient number, since it is larger than the sum of its proper divisors (1).

21700087240627 is an equidigital number, since it uses as much as digits as its factorization.

21700087240627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The spelling of 21700087240627 in words is "twenty-one trillion, seven hundred billion, eighty-seven million, two hundred forty thousand, six hundred twenty-seven".