70072156517 has 16 divisors (see below), whose sum is σ = 77594254080. Its totient is φ = 62745883200.

The previous prime is 70072156507. The next prime is 70072156529. The reversal of 70072156517 is 71565127007.

It is a happy number.

It is not a de Polignac number, because 70072156517 - 2⁴ = 70072156501 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 (70072156507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270083 + ... + 461615.

It is an arithmetic number, because the mean of its divisors is an integer number (4849640880).

Almost surely, 2^70072156517 is an apocalyptic number.

It is an amenable number.

70072156517 is a deficient number, since it is larger than the sum of its proper divisors (7522097563).

70072156517 is a wasteful number, since it uses less digits than its factorization.

70072156517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192044.

The product of its (nonzero) digits is 102900, while the sum is 41.

The spelling of 70072156517 in words is "seventy billion, seventy-two million, one hundred fifty-six thousand, five hundred seventeen".