165151645123522 has 32 divisors (see below), whose sum is σ = 253444924287360. Its totient is φ = 80690665923840.

The previous prime is 165151645123471. The next prime is 165151645123529. The reversal of 165151645123522 is 225321546151561.

It is not an unprimeable number, because it can be changed into a prime (165151645123529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240658304 + ... + 1240791412.

It is an arithmetic number, because the mean of its divisors is an integer number (7920153883980).

Almost surely, 2^{165151645123522} is an apocalyptic number.

165151645123522 is a deficient number, since it is larger than the sum of its proper divisors (88293279163838).

165151645123522 is a wasteful number, since it uses less digits than its factorization.

165151645123522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210618.

The product of its digits is 2160000, while the sum is 49.

The spelling of 165151645123522 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, six hundred forty-five million, one hundred twenty-three thousand, five hundred twenty-two".