70515121612172 has 48 divisors (see below), whose sum is σ = 125431471872000. Its totient is φ = 34679901453120.

The previous prime is 70515121612153. The next prime is 70515121612181. The reversal of 70515121612172 is 27121612151507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815075654 + ... + 815162162.

It is an arithmetic number, because the mean of its divisors is an integer number (2613155664000).

Almost surely, 2^{70515121612172} is an apocalyptic number.

It is an amenable number.

70515121612172 is a deficient number, since it is larger than the sum of its proper divisors (54916350259828).

70515121612172 is a wasteful number, since it uses less digits than its factorization.

70515121612172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93246 (or 93244 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 41.

Adding to 70515121612172 its reverse (27121612151507), we get a palindrome (97636733763679).

The spelling of 70515121612172 in words is "seventy trillion, five hundred fifteen billion, one hundred twenty-one million, six hundred twelve thousand, one hundred seventy-two".