149545649577 has 16 divisors (see below), whose sum is σ = 200690386560. Its totient is φ = 99049172352.

The previous prime is 149545649569. The next prime is 149545649579. The reversal of 149545649577 is 775946545941.

It is not a de Polignac number, because 149545649577 - 2³ = 149545649569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149545649579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4773988 + ... + 4805210.

It is an arithmetic number, because the mean of its divisors is an integer number (12543149160).

Almost surely, 2^149545649577 is an apocalyptic number.

It is an amenable number.

149545649577 is a deficient number, since it is larger than the sum of its proper divisors (51144736983).

149545649577 is a wasteful number, since it uses less digits than its factorization.

149545649577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41552.

The product of its digits is 190512000, while the sum is 66.

The spelling of 149545649577 in words is "one hundred forty-nine billion, five hundred forty-five million, six hundred forty-nine thousand, five hundred seventy-seven".