2251688835652 has 12 divisors (see below), whose sum is σ = 4005053093356. Its totient is φ = 1107387951840.

The previous prime is 2251688835647. The next prime is 2251688835659. The reversal of 2251688835652 is 2565388861522.

It can be written as a sum of positive squares in 2 ways, for example, as 674313599556 + 1577375236096 = 821166^2 + 1255936^2 .

It is a super-2 number, since 2×2251688835652² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is not an unprimeable number, because it can be changed into a prime (2251688835659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4614116223 + ... + 4614116710.

Almost surely, 2^{2251688835652} is an apocalyptic number.

It is an amenable number.

2251688835652 is a deficient number, since it is larger than the sum of its proper divisors (1753364257704).

2251688835652 is a wasteful number, since it uses less digits than its factorization.

2251688835652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9228232998 (or 9228232996 counting only the distinct ones).

The product of its digits is 55296000, while the sum is 61.

The spelling of 2251688835652 in words is "two trillion, two hundred fifty-one billion, six hundred eighty-eight million, eight hundred thirty-five thousand, six hundred fifty-two".