149539031699 has 4 divisors (see below), whose sum is σ = 149540122560. Its totient is φ = 149537940840.

The previous prime is 149539031683. The next prime is 149539031701. The reversal of 149539031699 is 996130935941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 996130935941 = 146893 ⋅6781337.

It is a cyclic number.

It is not a de Polignac number, because 149539031699 - 2⁴ = 149539031683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149539031899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304259 + ... + 625820.

It is an arithmetic number, because the mean of its divisors is an integer number (37385030640).

Almost surely, 2^149539031699 is an apocalyptic number.

149539031699 is a deficient number, since it is larger than the sum of its proper divisors (1090861).

149539031699 is an equidigital number, since it uses as much as digits as its factorization.

149539031699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090860.

The product of its (nonzero) digits is 7085880, while the sum is 59.

The spelling of 149539031699 in words is "one hundred forty-nine billion, five hundred thirty-nine million, thirty-one thousand, six hundred ninety-nine".