149881789371 has 4 divisors (see below), whose sum is σ = 199842385832. Its totient is φ = 99921192912.

The previous prime is 149881789367. The next prime is 149881789391. The reversal of 149881789371 is 173987188941.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 149881789371 - 2² = 149881789367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149881789391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24980298226 + ... + 24980298231.

It is an arithmetic number, because the mean of its divisors is an integer number (49960596458).

Almost surely, 2^149881789371 is an apocalyptic number.

149881789371 is a deficient number, since it is larger than the sum of its proper divisors (49960596461).

149881789371 is an equidigital number, since it uses as much as digits as its factorization.

149881789371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49960596460.

The product of its digits is 24385536, while the sum is 66.

The spelling of 149881789371 in words is "one hundred forty-nine billion, eight hundred eighty-one million, seven hundred eighty-nine thousand, three hundred seventy-one".