2540641194507 has 16 divisors (see below), whose sum is σ = 3648135099168. Its totient is φ = 1563456537600.

The previous prime is 2540641194451. The next prime is 2540641194521. The reversal of 2540641194507 is 7054911460452.

It is not a de Polignac number, because 2540641194507 - 2¹² = 2540641190411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540641198507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4929883 + ... + 5420795.

It is an arithmetic number, because the mean of its divisors is an integer number (228008443698).

Almost surely, 2^{2540641194507} is an apocalyptic number.

2540641194507 is a deficient number, since it is larger than the sum of its proper divisors (1107493904661).

2540641194507 is a wasteful number, since it uses less digits than its factorization.

2540641194507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623630.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 2540641194507 in words is "two trillion, five hundred forty billion, six hundred forty-one million, one hundred ninety-four thousand, five hundred seven".