70369817919491 has 2 divisors, whose sum is σ = 70369817919492. Its totient is φ = 70369817919490.

The previous prime is 70369817919487. The next prime is 70369817919503. The reversal of 70369817919491 is 19491971896307.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70369817919491 - 2² = 70369817919487 is a prime.

It is a super-2 number, since 2×70369817919491² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (70369817912491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35184908959745 + 35184908959746.

It is an arithmetic number, because the mean of its divisors is an integer number (35184908959746).

Almost surely, 2^{70369817919491} is an apocalyptic number.

70369817919491 is a deficient number, since it is larger than the sum of its proper divisors (1).

70369817919491 is an equidigital number, since it uses as much as digits as its factorization.

70369817919491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185177664, while the sum is 74.

The spelling of 70369817919491 in words is "seventy trillion, three hundred sixty-nine billion, eight hundred seventeen million, nine hundred nineteen thousand, four hundred ninety-one".