149223374999 has 4 divisors (see below), whose sum is σ = 151112278560. Its totient is φ = 147334471440.

The previous prime is 149223374977. The next prime is 149223375011. The reversal of 149223374999 is 999473322941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149223374999 - 2²⁴ = 149206597783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149223374969) 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, 944451662 + ... + 944451819.

It is an arithmetic number, because the mean of its divisors is an integer number (37778069640).

Almost surely, 2^149223374999 is an apocalyptic number.

149223374999 is a deficient number, since it is larger than the sum of its proper divisors (1888903561).

149223374999 is an equidigital number, since it uses as much as digits as its factorization.

149223374999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888903560.

The product of its digits is 26453952, while the sum is 62.

The spelling of 149223374999 in words is "one hundred forty-nine billion, two hundred twenty-three million, three hundred seventy-four thousand, nine hundred ninety-nine".