72434583578878 has 16 divisors (see below), whose sum is σ = 108918270304560. Its totient is φ = 36128494685376.

The previous prime is 72434583578857. The next prime is 72434583578893. The reversal of 72434583578878 is 87887538543427.

It is a junction number, because it is equal to n+sod(n) for n = 72434583578798 and 72434583578807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205532125 + ... + 205884247.

It is an arithmetic number, because the mean of its divisors is an integer number (6807391894035).

Almost surely, 2^{72434583578878} is an apocalyptic number.

72434583578878 is a deficient number, since it is larger than the sum of its proper divisors (36483686725682).

72434583578878 is a wasteful number, since it uses less digits than its factorization.

72434583578878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604011.

The product of its digits is 10115481600, while the sum is 79.

The spelling of 72434583578878 in words is "seventy-two trillion, four hundred thirty-four billion, five hundred eighty-three million, five hundred seventy-eight thousand, eight hundred seventy-eight".