149215431140 has 24 divisors (see below), whose sum is σ = 313365527160. Its totient is φ = 59683673088.

The previous prime is 149215431109. The next prime is 149215431173. The reversal of 149215431140 is 41134512941.

It can be written as a sum of positive squares in 4 ways, for example, as 88466984356 + 60748446784 = 297434^2 + 246472^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149215431140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377876 + ... + 664244.

It is an arithmetic number, because the mean of its divisors is an integer number (13056896965).

Almost surely, 2^149215431140 is an apocalyptic number.

149215431140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149215431140 is an abundant number, since it is smaller than the sum of its proper divisors (164150096020).

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

149215431140 is a wasteful number, since it uses less digits than its factorization.

149215431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312431 (or 312429 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 149215431140 in words is "one hundred forty-nine billion, two hundred fifteen million, four hundred thirty-one thousand, one hundred forty".