2506943388889 has 9 divisors (see below), whose sum is σ = 2511500567349. Its totient is φ = 2502394473180.

The previous prime is 2506943388871. The next prime is 2506943388913. The reversal of 2506943388889 is 9888833496052.

The square root of 2506943388889 is 1583333.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2506943388889 - 2⁵ = 2506943388857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506943388289) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1176415354 + ... + 1176417484.

Almost surely, 2^{2506943388889} is an apocalyptic number.

2506943388889 is the 1583333-rd square number.

2506943388889 is the 791667-th centered octagonal number.

It is an amenable number.

2506943388889 is a deficient number, since it is larger than the sum of its proper divisors (4557178460).

2506943388889 is an frugal number, since it uses more digits than its factorization.

2506943388889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 716636160, while the sum is 73.

The spelling of 2506943388889 in words is "two trillion, five hundred six billion, nine hundred forty-three million, three hundred eighty-eight thousand, eight hundred eighty-nine".