2153123555636 has 6 divisors (see below), whose sum is σ = 3767966222370. Its totient is φ = 1076561777816.

The previous prime is 2153123555623. The next prime is 2153123555659. The reversal of 2153123555636 is 6365553213512.

It can be written as a sum of positive squares in only one way, i.e., 1348747758736 + 804375796900 = 1161356^2 + 896870^2 .

It is a super-2 number, since 2×2153123555636² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269140444451 + ... + 269140444458.

It is an arithmetic number, because the mean of its divisors is an integer number (627994370395).

Almost surely, 2^{2153123555636} is an apocalyptic number.

It is an amenable number.

2153123555636 is a deficient number, since it is larger than the sum of its proper divisors (1614842666734).

2153123555636 is a wasteful number, since it uses less digits than its factorization.

2153123555636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538280888913 (or 538280888911 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 47.

The spelling of 2153123555636 in words is "two trillion, one hundred fifty-three billion, one hundred twenty-three million, five hundred fifty-five thousand, six hundred thirty-six".