2157546761882 has 8 divisors (see below), whose sum is σ = 3236375492436. Its totient is φ = 1078754931072.

The previous prime is 2157546761863. The next prime is 2157546761893. The reversal of 2157546761882 is 2881676457512.

It is a Cunningham number, because it is equal to 1468859²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 2157546761881 + 1 = 1468859^2 + 1^2 .

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

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, 9078293 + ... + 9312920.

Almost surely, 2^{2157546761882} is an apocalyptic number.

2157546761882 is a deficient number, since it is larger than the sum of its proper divisors (1078828730554).

2157546761882 is a wasteful number, since it uses less digits than its factorization.

2157546761882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18449872.

The product of its digits is 45158400, while the sum is 62.

The spelling of 2157546761882 in words is "two trillion, one hundred fifty-seven billion, five hundred forty-six million, seven hundred sixty-one thousand, eight hundred eighty-two".