2152744645637 has 4 divisors (see below), whose sum is σ = 2152850592480. Its totient is φ = 2152638698796.

The previous prime is 2152744645631. The next prime is 2152744645651. The reversal of 2152744645637 is 7365464472512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2152744645637 - 2⁴ = 2152744645621 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 (2152744645631) 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, 52942937 + ... + 52983582.

It is an arithmetic number, because the mean of its divisors is an integer number (538212648120).

Almost surely, 2^{2152744645637} is an apocalyptic number.

It is an amenable number.

2152744645637 is a deficient number, since it is larger than the sum of its proper divisors (105946843).

2152744645637 is a wasteful number, since it uses less digits than its factorization.

2152744645637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105946842.

The product of its digits is 33868800, while the sum is 56.

The spelling of 2152744645637 in words is "two trillion, one hundred fifty-two billion, seven hundred forty-four million, six hundred forty-five thousand, six hundred thirty-seven".