245644446542 has 64 divisors (see below), whose sum is σ = 434927978496. Its totient is φ = 102790172160.

The previous prime is 245644446449. The next prime is 245644446581.

It is a happy number.

245644446542 is nontrivially palindromic in base 10.

245644446542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39318863 + ... + 39325109.

It is an arithmetic number, because the mean of its divisors is an integer number (6795749664).

Almost surely, 2^245644446542 is an apocalyptic number.

245644446542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245644446542 is a deficient number, since it is larger than the sum of its proper divisors (189283531954).

245644446542 is a wasteful number, since it uses less digits than its factorization.

245644446542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8561.

The product of its digits is 14745600, while the sum is 50.

The spelling of 245644446542 in words is "two hundred forty-five billion, six hundred forty-four million, four hundred forty-six thousand, five hundred forty-two".