149499204977 has 16 divisors (see below), whose sum is σ = 158613215040. Its totient is φ = 140421063168.

The previous prime is 149499204839. The next prime is 149499204983. The reversal of 149499204977 is 779402994941.

It is a cyclic number.

It is not a de Polignac number, because 149499204977 - 2²⁶ = 149432096113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149499204997) 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, 18999398 + ... + 19007264.

It is an arithmetic number, because the mean of its divisors is an integer number (9913325940).

Almost surely, 2^149499204977 is an apocalyptic number.

149499204977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

149499204977 is a deficient number, since it is larger than the sum of its proper divisors (9114010063).

149499204977 is a wasteful number, since it uses less digits than its factorization.

149499204977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000.

The product of its (nonzero) digits is 41150592, while the sum is 65.

The spelling of 149499204977 in words is "one hundred forty-nine billion, four hundred ninety-nine million, two hundred four thousand, nine hundred seventy-seven".