70533174521 has 2 divisors, whose sum is σ = 70533174522. Its totient is φ = 70533174520.

The previous prime is 70533174511. The next prime is 70533174553. The reversal of 70533174521 is 12547133507.

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., 63554410000 + 6978764521 = 252100^2 + 83539^2 .

It is an emirp because it is prime and its reverse (12547133507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70533174521 - 2²² = 70528980217 is a prime.

It is not a weakly prime, because it can be changed into another prime (70533174511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35266587260 + 35266587261.

It is an arithmetic number, because the mean of its divisors is an integer number (35266587261).

Almost surely, 2^70533174521 is an apocalyptic number.

It is an amenable number.

70533174521 is a deficient number, since it is larger than the sum of its proper divisors (1).

70533174521 is an equidigital number, since it uses as much as digits as its factorization.

70533174521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 70533174521 in words is "seventy billion, five hundred thirty-three million, one hundred seventy-four thousand, five hundred twenty-one".