149315283897 has 32 divisors (see below), whose sum is σ = 222016099200. Its totient is φ = 88629230592.

The previous prime is 149315283893. The next prime is 149315283899. The reversal of 149315283897 is 798382513941.

It is a happy number.

It is not a de Polignac number, because 149315283897 - 2² = 149315283893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149315283897.

It is not an unprimeable number, because it can be changed into a prime (149315283893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1075758 + ... + 1206600.

It is an arithmetic number, because the mean of its divisors is an integer number (6938003100).

Almost surely, 2^149315283897 is an apocalyptic number.

It is an amenable number.

149315283897 is a deficient number, since it is larger than the sum of its proper divisors (72700815303).

149315283897 is a wasteful number, since it uses less digits than its factorization.

149315283897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131897.

The product of its digits is 13063680, while the sum is 60.

The spelling of 149315283897 in words is "one hundred forty-nine billion, three hundred fifteen million, two hundred eighty-three thousand, eight hundred ninety-seven".