4787731782438 has 16 divisors (see below), whose sum is σ = 10445960252736. Its totient is φ = 1450827812840.

The previous prime is 4787731782419. The next prime is 4787731782479. The reversal of 4787731782438 is 8342871377874.

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, 36270695256 + ... + 36270695387.

It is an arithmetic number, because the mean of its divisors is an integer number (652872515796).

Almost surely, 2^{4787731782438} is an apocalyptic number.

4787731782438 is an abundant number, since it is smaller than the sum of its proper divisors (5658228470298).

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

4787731782438 is a wasteful number, since it uses less digits than its factorization.

4787731782438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72541390659.

The product of its digits is 354041856, while the sum is 69.

The spelling of 4787731782438 in words is "four trillion, seven hundred eighty-seven billion, seven hundred thirty-one million, seven hundred eighty-two thousand, four hundred thirty-eight".