2731640022757 has 4 divisors (see below), whose sum is σ = 2892324729996. Its totient is φ = 2570955315520.

The previous prime is 2731640022703. The next prime is 2731640022767. The reversal of 2731640022757 is 7572200461372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1299419886241 + 1432220136516 = 1139921^2 + 1196754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2731640022757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731640022767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80342353594 + ... + 80342353627.

It is an arithmetic number, because the mean of its divisors is an integer number (723081182499).

Almost surely, 2^{2731640022757} is an apocalyptic number.

It is an amenable number.

2731640022757 is a deficient number, since it is larger than the sum of its proper divisors (160684707239).

2731640022757 is a wasteful number, since it uses less digits than its factorization.

2731640022757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160684707238.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 2731640022757 in words is "two trillion, seven hundred thirty-one billion, six hundred forty million, twenty-two thousand, seven hundred fifty-seven".