2116138783642 has 8 divisors (see below), whose sum is σ = 3418378035156. Its totient is φ = 976679438592.

The previous prime is 2116138783637. The next prime is 2116138783667. The reversal of 2116138783642 is 2463878316112.

It can be written as a sum of positive squares in 2 ways, for example, as 1965292768321 + 150846015321 = 1401889^2 + 388389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2116138783642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40694976583 + ... + 40694976634.

Almost surely, 2^{2116138783642} is an apocalyptic number.

2116138783642 is a deficient number, since it is larger than the sum of its proper divisors (1302239251514).

2116138783642 is a wasteful number, since it uses less digits than its factorization.

2116138783642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81389953232.

The product of its digits is 2322432, while the sum is 52.

The spelling of 2116138783642 in words is "two trillion, one hundred sixteen billion, one hundred thirty-eight million, seven hundred eighty-three thousand, six hundred forty-two".