7438783931667 has 12 divisors (see below), whose sum is σ = 11721720134904. Its totient is φ = 4508353897920.

The previous prime is 7438783931627. The next prime is 7438783931701. The reversal of 7438783931667 is 7661393878347.

7438783931667 is a `hidden beast` number, since 7 + 4 + 3 + 8 + 78 + 393 + 166 + 7 = 666.

It is not a de Polignac number, because 7438783931667 - 2¹⁶ = 7438783866131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7438783931595 and 7438783931604.

It is not an unprimeable number, because it can be changed into a prime (7438783931617) 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, 37569615718 + ... + 37569615915.

It is an arithmetic number, because the mean of its divisors is an integer number (976810011242).

Almost surely, 2^{7438783931667} is an apocalyptic number.

7438783931667 is a deficient number, since it is larger than the sum of its proper divisors (4282936203237).

7438783931667 is a wasteful number, since it uses less digits than its factorization.

7438783931667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75139231650 (or 75139231647 counting only the distinct ones).

The product of its digits is 768144384, while the sum is 72.

The spelling of 7438783931667 in words is "seven trillion, four hundred thirty-eight billion, seven hundred eighty-three million, nine hundred thirty-one thousand, six hundred sixty-seven".