148831868521 has 16 divisors (see below), whose sum is σ = 174756374784. Its totient is φ = 124075658304.

The previous prime is 148831868509. The next prime is 148831868533. The reversal of 148831868521 is 125868138841.

It is an interprime number because it is at equal distance from previous prime (148831868509) and next prime (148831868533).

It is a cyclic number.

It is not a de Polignac number, because 148831868521 - 2⁵ = 148831868489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148831868501) 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, 590796 + ... + 804178.

It is an arithmetic number, because the mean of its divisors is an integer number (10922273424).

Almost surely, 2^148831868521 is an apocalyptic number.

It is an amenable number.

148831868521 is a deficient number, since it is larger than the sum of its proper divisors (25924506263).

148831868521 is a wasteful number, since it uses less digits than its factorization.

148831868521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216120.

The product of its digits is 2949120, while the sum is 55.

The spelling of 148831868521 in words is "one hundred forty-eight billion, eight hundred thirty-one million, eight hundred sixty-eight thousand, five hundred twenty-one".