423738545551 has 8 divisors (see below), whose sum is σ = 436845667104. Its totient is φ = 410718515040.

The previous prime is 423738545519. The next prime is 423738545567. The reversal of 423738545551 is 155545837324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423738545551 - 2⁵ = 423738545519 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 (423738545051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21762880 + ... + 21782341.

It is an arithmetic number, because the mean of its divisors is an integer number (54605708388).

Almost surely, 2^423738545551 is an apocalyptic number.

423738545551 is a deficient number, since it is larger than the sum of its proper divisors (13107121553).

423738545551 is a wasteful number, since it uses less digits than its factorization.

423738545551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43545521.

The product of its digits is 10080000, while the sum is 52.

The spelling of 423738545551 in words is "four hundred twenty-three billion, seven hundred thirty-eight million, five hundred forty-five thousand, five hundred fifty-one".