8157155512 has 32 divisors (see below), whose sum is σ = 16698150000. Its totient is φ = 3704896000.

The previous prime is 8157155491. The next prime is 8157155569. The reversal of 8157155512 is 2155517518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78864 + ... + 150112.

Almost surely, 2^8157155512 is an apocalyptic number.

It is an amenable number.

8157155512 is an abundant number, since it is smaller than the sum of its proper divisors (8540994488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8157155512 is a wasteful number, since it uses less digits than its factorization.

8157155512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72567 (or 72563 counting only the distinct ones).

The product of its digits is 70000, while the sum is 40.

The square root of 8157155512 is about 90316.9724470434. The cubic root of 8157155512 is about 2013.0114600524.

The spelling of 8157155512 in words is "eight billion, one hundred fifty-seven million, one hundred fifty-five thousand, five hundred twelve".