148659993840 has 80 divisors (see below), whose sum is σ = 487954581408. Its totient is φ = 37310742528.

The previous prime is 148659993791. The next prime is 148659993851. The reversal of 148659993840 is 48399956841.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18214057 + ... + 18222216.

Almost surely, 2^148659993840 is an apocalyptic number.

148659993840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148659993840 is an abundant number, since it is smaller than the sum of its proper divisors (339294587568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148659993840 is a wasteful number, since it uses less digits than its factorization.

148659993840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36436306 (or 36436300 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 66.

The spelling of 148659993840 in words is "one hundred forty-eight billion, six hundred fifty-nine million, nine hundred ninety-three thousand, eight hundred forty".