152559766921 has 9 divisors (see below), whose sum is σ = 153049176333. Its totient is φ = 152071921260.

The previous prime is 152559766907. The next prime is 152559766927. The reversal of 152559766921 is 129667955251.

It is a happy number.

The square root of 152559766921 is 390589.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 152559766921 - 2³⁵ = 118200028553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152559766927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 241774276 + ... + 241774906.

It is an arithmetic number, because the mean of its divisors is an integer number (17005464037).

Almost surely, 2^152559766921 is an apocalyptic number.

152559766921 is the 390589-th square number.

152559766921 is the 195295-th centered octagonal number.

It is an amenable number.

152559766921 is a deficient number, since it is larger than the sum of its proper divisors (489409412).

152559766921 is an frugal number, since it uses more digits than its factorization.

152559766921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500 (or 1250 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 58.

The spelling of 152559766921 in words is "one hundred fifty-two billion, five hundred fifty-nine million, seven hundred sixty-six thousand, nine hundred twenty-one".