70381565623 has 2 divisors, whose sum is σ = 70381565624. Its totient is φ = 70381565622.

The previous prime is 70381565543. The next prime is 70381565629. The reversal of 70381565623 is 32656518307.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70381565623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70381565629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35190782811 + 35190782812.

It is an arithmetic number, because the mean of its divisors is an integer number (35190782812).

Almost surely, 2^70381565623 is an apocalyptic number.

70381565623 is a deficient number, since it is larger than the sum of its proper divisors (1).

70381565623 is an equidigital number, since it uses as much as digits as its factorization.

70381565623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 70381565623 in words is "seventy billion, three hundred eighty-one million, five hundred sixty-five thousand, six hundred twenty-three".