78563240542 has 32 divisors (see below), whose sum is σ = 122508417024. Its totient is φ = 37745416800.

The previous prime is 78563240531. The next prime is 78563240557. The reversal of 78563240542 is 24504236587.

It is a junction number, because it is equal to n+sod(n) for n = 78563240492 and 78563240501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23583817 + ... + 23587147.

It is an arithmetic number, because the mean of its divisors is an integer number (3828388032).

Almost surely, 2^78563240542 is an apocalyptic number.

78563240542 is a deficient number, since it is larger than the sum of its proper divisors (43945176482).

78563240542 is a wasteful number, since it uses less digits than its factorization.

78563240542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944.

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 78563240542 in words is "seventy-eight billion, five hundred sixty-three million, two hundred forty thousand, five hundred forty-two".