2115022563653 has 4 divisors (see below), whose sum is σ = 2116813439148. Its totient is φ = 2113231688160.

The previous prime is 2115022563649. The next prime is 2115022563697. The reversal of 2115022563653 is 3563652205112.

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 1985075291329 + 129947272324 = 1408927^2 + 360482^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115022563653 - 2² = 2115022563649 is a prime.

It is a super-2 number, since 2×2115022563653² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2115022563653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115022563853) 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, 895435976 + ... + 895438337.

It is an arithmetic number, because the mean of its divisors is an integer number (529203359787).

Almost surely, 2^{2115022563653} is an apocalyptic number.

It is an amenable number.

2115022563653 is a deficient number, since it is larger than the sum of its proper divisors (1790875495).

2115022563653 is a wasteful number, since it uses less digits than its factorization.

2115022563653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790875494.

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 2115022563653 its reverse (3563652205112), we get a palindrome (5678674768765).

The spelling of 2115022563653 in words is "two trillion, one hundred fifteen billion, twenty-two million, five hundred sixty-three thousand, six hundred fifty-three".