152145271721 has 16 divisors (see below), whose sum is σ = 161964748800. Its totient is φ = 142703072400.

The previous prime is 152145271669. The next prime is 152145271741. The reversal of 152145271721 is 127172541251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152145271721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152145271741) 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, 455951 + ... + 715668.

It is an arithmetic number, because the mean of its divisors is an integer number (10122796800).

Almost surely, 2^152145271721 is an apocalyptic number.

It is an amenable number.

152145271721 is a deficient number, since it is larger than the sum of its proper divisors (9819477079).

152145271721 is a wasteful number, since it uses less digits than its factorization.

152145271721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171780.

The product of its digits is 39200, while the sum is 38.

The spelling of 152145271721 in words is "one hundred fifty-two billion, one hundred forty-five million, two hundred seventy-one thousand, seven hundred twenty-one".