149172860433 has 4 divisors (see below), whose sum is σ = 198897147248. Its totient is φ = 99448573620.

The previous prime is 149172860429. The next prime is 149172860437. The reversal of 149172860433 is 334068271941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 334068271941 = 3 ⋅111356090647.

It is an interprime number because it is at equal distance from previous prime (149172860429) and next prime (149172860437).

It is not a de Polignac number, because 149172860433 - 2² = 149172860429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149172860437) 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, 24862143403 + ... + 24862143408.

It is an arithmetic number, because the mean of its divisors is an integer number (49724286812).

Almost surely, 2^149172860433 is an apocalyptic number.

It is an amenable number.

149172860433 is a deficient number, since it is larger than the sum of its proper divisors (49724286815).

149172860433 is an equidigital number, since it uses as much as digits as its factorization.

149172860433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49724286814.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 149172860433 in words is "one hundred forty-nine billion, one hundred seventy-two million, eight hundred sixty thousand, four hundred thirty-three".