70061520517 has 4 divisors (see below), whose sum is σ = 70105780800. Its totient is φ = 70017260236.

The previous prime is 70061520499. The next prime is 70061520527. The reversal of 70061520517 is 71502516007.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70061520517 - 2²³ = 70053131909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70061520527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22127767 + ... + 22130932.

It is an arithmetic number, because the mean of its divisors is an integer number (17526445200).

Almost surely, 2^70061520517 is an apocalyptic number.

It is an amenable number.

70061520517 is a deficient number, since it is larger than the sum of its proper divisors (44260283).

70061520517 is a wasteful number, since it uses less digits than its factorization.

70061520517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44260282.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 70061520517 in words is "seventy billion, sixty-one million, five hundred twenty thousand, five hundred seventeen".