2542131643645 has 8 divisors (see below), whose sum is σ = 3327881424480. Its totient is φ = 1848823013520.

The previous prime is 2542131643637. The next prime is 2542131643673. The reversal of 2542131643645 is 5463461312452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2542131643645 - 2³ = 2542131643637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2542131643595 and 2542131643604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23110287615 + ... + 23110287724.

It is an arithmetic number, because the mean of its divisors is an integer number (415985178060).

Almost surely, 2^{2542131643645} is an apocalyptic number.

It is an amenable number.

2542131643645 is a deficient number, since it is larger than the sum of its proper divisors (785749780835).

2542131643645 is a wasteful number, since it uses less digits than its factorization.

2542131643645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46220575355.

The product of its digits is 2073600, while the sum is 46.

The spelling of 2542131643645 in words is "two trillion, five hundred forty-two billion, one hundred thirty-one million, six hundred forty-three thousand, six hundred forty-five".