2543642649124 has 6 divisors (see below), whose sum is σ = 4451374635974. Its totient is φ = 1271821324560.

The previous prime is 2543642649109. The next prime is 2543642649193. The reversal of 2543642649124 is 4219462463452.

It can be written as a sum of positive squares in only one way, i.e., 1784708964900 + 758933684224 = 1335930^2 + 871168^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317955331137 + ... + 317955331144.

Almost surely, 2^{2543642649124} is an apocalyptic number.

It is an amenable number.

2543642649124 is a deficient number, since it is larger than the sum of its proper divisors (1907731986850).

2543642649124 is a wasteful number, since it uses less digits than its factorization.

2543642649124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635910662285 (or 635910662283 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 52.

The spelling of 2543642649124 in words is "two trillion, five hundred forty-three billion, six hundred forty-two million, six hundred forty-nine thousand, one hundred twenty-four".