12735507023478 has 64 divisors (see below), whose sum is σ = 28450811632320. Its totient is φ = 4222725405696.

The previous prime is 12735507023467. The next prime is 12735507023537. The reversal of 12735507023478 is 87432070553721.

12735507023478 is a `hidden beast` number, since 1 + 2 + 7 + 35 + 50 + 70 + 23 + 478 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51076326 + ... + 51325062.

It is an arithmetic number, because the mean of its divisors is an integer number (444543931755).

Almost surely, 2^{12735507023478} is an apocalyptic number.

12735507023478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12735507023478 is an abundant number, since it is smaller than the sum of its proper divisors (15715304608842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12735507023478 is a wasteful number, since it uses less digits than its factorization.

12735507023478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253758 (or 253752 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 54.

The spelling of 12735507023478 in words is "twelve trillion, seven hundred thirty-five billion, five hundred seven million, twenty-three thousand, four hundred seventy-eight".