2513754578381 has 4 divisors (see below), whose sum is σ = 2536816547100. Its totient is φ = 2490692609664.

The previous prime is 2513754578329. The next prime is 2513754578459. The reversal of 2513754578381 is 1838754573152.

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 1053221902756 + 1460532675625 = 1026266^2 + 1208525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513754578381 - 2³⁴ = 2496574709197 is a prime.

It is a super-2 number, since 2×2513754578381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2513754578381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513754508381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11530984196 + ... + 11530984413.

It is an arithmetic number, because the mean of its divisors is an integer number (634204136775).

Almost surely, 2^{2513754578381} is an apocalyptic number.

It is an amenable number.

2513754578381 is a deficient number, since it is larger than the sum of its proper divisors (23061968719).

2513754578381 is a wasteful number, since it uses less digits than its factorization.

2513754578381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23061968718.

The product of its digits is 28224000, while the sum is 59.

The spelling of 2513754578381 in words is "two trillion, five hundred thirteen billion, seven hundred fifty-four million, five hundred seventy-eight thousand, three hundred eighty-one".