70643708502373 has 2 divisors, whose sum is σ = 70643708502374. Its totient is φ = 70643708502372.

The previous prime is 70643708502307. The next prime is 70643708502407. The reversal of 70643708502373 is 37320580734607.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67518793188324 + 3124915314049 = 8216982^2 + 1767743^2 .

It is an emirp because it is prime and its reverse (37320580734607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70643708502373 - 2⁴⁵ = 35459336413541 is a prime.

It is a super-2 number, since 2×70643708502373² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70643708502473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35321854251186 + 35321854251187.

It is an arithmetic number, because the mean of its divisors is an integer number (35321854251187).

Almost surely, 2^{70643708502373} is an apocalyptic number.

It is an amenable number.

70643708502373 is a deficient number, since it is larger than the sum of its proper divisors (1).

70643708502373 is an equidigital number, since it uses as much as digits as its factorization.

70643708502373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 55.

The spelling of 70643708502373 in words is "seventy trillion, six hundred forty-three billion, seven hundred eight million, five hundred two thousand, three hundred seventy-three".