149641638417 has 6 divisors (see below), whose sum is σ = 216149033282. Its totient is φ = 99761092272.

The previous prime is 149641638407. The next prime is 149641638427. The reversal of 149641638417 is 714836146941.

It is a happy number.

149641638417 is a `hidden beast` number, since 1 + 4 + 9 + 64 + 163 + 8 + 417 = 666.

It is an interprime number because it is at equal distance from previous prime (149641638407) and next prime (149641638427).

It can be written as a sum of positive squares in only one way, i.e., 135700877376 + 13940761041 = 368376^2 + 118071^2 .

It is not a de Polignac number, because 149641638417 - 2⁶ = 149641638353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149641638407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8313424348 + ... + 8313424365.

Almost surely, 2^149641638417 is an apocalyptic number.

It is an amenable number.

149641638417 is a deficient number, since it is larger than the sum of its proper divisors (66507394865).

149641638417 is a wasteful number, since it uses less digits than its factorization.

149641638417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16626848719 (or 16626848716 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 149641638417 in words is "one hundred forty-nine billion, six hundred forty-one million, six hundred thirty-eight thousand, four hundred seventeen".