148915609921 has 8 divisors (see below), whose sum is σ = 160447089600. Its totient is φ = 137395049232.

The previous prime is 148915609907. The next prime is 148915609933. The reversal of 148915609921 is 129906519841.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148915609921 - 2⁷ = 148915609793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148915609421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2701405 + ... + 2755978.

It is an arithmetic number, because the mean of its divisors is an integer number (20055886200).

Almost surely, 2^148915609921 is an apocalyptic number.

It is an amenable number.

148915609921 is a deficient number, since it is larger than the sum of its proper divisors (11531479679).

148915609921 is a wasteful number, since it uses less digits than its factorization.

148915609921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459495.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 148915609921 in words is "one hundred forty-eight billion, nine hundred fifteen million, six hundred nine thousand, nine hundred twenty-one".