70021932517 has 2 divisors, whose sum is σ = 70021932518. Its totient is φ = 70021932516.

The previous prime is 70021932467. The next prime is 70021932523. The reversal of 70021932517 is 71523912007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65889242721 + 4132689796 = 256689^2 + 64286^2 .

It is a cyclic number.

It is not a de Polignac number, because 70021932517 - 2³¹ = 67874448869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70021932817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010966258 + 35010966259.

It is an arithmetic number, because the mean of its divisors is an integer number (35010966259).

Almost surely, 2^70021932517 is an apocalyptic number.

It is an amenable number.

70021932517 is a deficient number, since it is larger than the sum of its proper divisors (1).

70021932517 is an equidigital number, since it uses as much as digits as its factorization.

70021932517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

It can be divided in two parts, 700219 and 32517, that added together give a square (732736 = 856²).

The spelling of 70021932517 in words is "seventy billion, twenty-one million, nine hundred thirty-two thousand, five hundred seventeen".