2129452478253 has 6 divisors (see below), whose sum is σ = 3075875801934. Its totient is φ = 1419634985496.

The previous prime is 2129452478201. The next prime is 2129452478267. The reversal of 2129452478253 is 3528742549212.

It is a happy number.

2129452478253 is a `hidden beast` number, since 2 + 1 + 2 + 94 + 524 + 7 + 8 + 25 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1964432102724 + 165020375529 = 1401582^2 + 406227^2 .

It is not a de Polignac number, because 2129452478253 - 2³⁸ = 1854574571309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2129452478253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129452478053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118302915450 + ... + 118302915467.

It is an arithmetic number, because the mean of its divisors is an integer number (512645966989).

Almost surely, 2^{2129452478253} is an apocalyptic number.

It is an amenable number.

2129452478253 is a deficient number, since it is larger than the sum of its proper divisors (946423323681).

2129452478253 is a wasteful number, since it uses less digits than its factorization.

2129452478253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236605830923 (or 236605830920 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 2129452478253 in words is "two trillion, one hundred twenty-nine billion, four hundred fifty-two million, four hundred seventy-eight thousand, two hundred fifty-three".