82738740013438 has 4 divisors (see below), whose sum is σ = 124108110020160. Its totient is φ = 41369370006718.

The previous prime is 82738740013421. The next prime is 82738740013453. The reversal of 82738740013438 is 83431004783728.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×82738740013438² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20684685003358 + ... + 20684685003361.

It is an arithmetic number, because the mean of its divisors is an integer number (31027027505040).

Almost surely, 2^{82738740013438} is an apocalyptic number.

82738740013438 is a deficient number, since it is larger than the sum of its proper divisors (41369370006722).

82738740013438 is a wasteful number, since it uses less digits than its factorization.

82738740013438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41369370006721.

The product of its (nonzero) digits is 21676032, while the sum is 58.

The spelling of 82738740013438 in words is "eighty-two trillion, seven hundred thirty-eight billion, seven hundred forty million, thirteen thousand, four hundred thirty-eight".