423949945137 has 4 divisors (see below), whose sum is σ = 565266593520. Its totient is φ = 282633296756.

The previous prime is 423949945121. The next prime is 423949945141. The reversal of 423949945137 is 731549949324.

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.

It is a cyclic number.

It is not a de Polignac number, because 423949945137 - 2⁴ = 423949945121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423949945117) 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, 70658324187 + ... + 70658324192.

It is an arithmetic number, because the mean of its divisors is an integer number (141316648380).

Almost surely, 2^423949945137 is an apocalyptic number.

It is an amenable number.

423949945137 is a deficient number, since it is larger than the sum of its proper divisors (141316648383).

423949945137 is a wasteful number, since it uses less digits than its factorization.

423949945137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141316648382.

The product of its digits is 29393280, while the sum is 60.

The spelling of 423949945137 in words is "four hundred twenty-three billion, nine hundred forty-nine million, nine hundred forty-five thousand, one hundred thirty-seven".