149327121990 has 64 divisors (see below), whose sum is σ = 377371146240. Its totient is φ = 37712378880.

The previous prime is 149327121989. The next prime is 149327122033. The reversal of 149327121990 is 99121723941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1763830 + ... + 1846550.

It is an arithmetic number, because the mean of its divisors is an integer number (5896424160).

Almost surely, 2^149327121990 is an apocalyptic number.

149327121990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149327121990 is an abundant number, since it is smaller than the sum of its proper divisors (228044024250).

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

149327121990 is a wasteful number, since it uses less digits than its factorization.

149327121990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85917.

The product of its (nonzero) digits is 244944, while the sum is 48.

The spelling of 149327121990 in words is "one hundred forty-nine billion, three hundred twenty-seven million, one hundred twenty-one thousand, nine hundred ninety".