70402131529 has 2 divisors, whose sum is σ = 70402131530. Its totient is φ = 70402131528.

The previous prime is 70402131521. The next prime is 70402131557. The reversal of 70402131529 is 92513120407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70356501504 + 45630025 = 265248^2 + 6755^2 .

It is a cyclic number.

It is not a de Polignac number, because 70402131529 - 2³ = 70402131521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70402131494 and 70402131503.

It is not a weakly prime, because it can be changed into another prime (70402131521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35201065764 + 35201065765.

It is an arithmetic number, because the mean of its divisors is an integer number (35201065765).

Almost surely, 2^70402131529 is an apocalyptic number.

It is an amenable number.

70402131529 is a deficient number, since it is larger than the sum of its proper divisors (1).

70402131529 is an equidigital number, since it uses as much as digits as its factorization.

70402131529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 70402131529 in words is "seventy billion, four hundred two million, one hundred thirty-one thousand, five hundred twenty-nine".