123475423547 has 12 divisors (see below), whose sum is σ = 144977062680. Its totient is φ = 104846950656.

The previous prime is 123475423541. The next prime is 123475423609. The reversal of 123475423547 is 745324574321.

It is not a de Polignac number, because 123475423547 - 2¹⁴ = 123475407163 is a prime.

It is a super-2 number, since 2×123475423547² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123475423541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11770022 + ... + 11780507.

It is an arithmetic number, because the mean of its divisors is an integer number (12081421890).

Almost surely, 2^123475423547 is an apocalyptic number.

123475423547 is a deficient number, since it is larger than the sum of its proper divisors (21501639133).

123475423547 is a wasteful number, since it uses less digits than its factorization.

123475423547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550650 (or 23550643 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 47.

Adding to 123475423547 its reverse (745324574321), we get a palindrome (868799997868).

The spelling of 123475423547 in words is "one hundred twenty-three billion, four hundred seventy-five million, four hundred twenty-three thousand, five hundred forty-seven".