78406043575 has 12 divisors (see below), whose sum is σ = 100576029240. Its totient is φ = 60561908960.

The previous prime is 78406043563. The next prime is 78406043629. The reversal of 78406043575 is 57534060487.

It is not a de Polignac number, because 78406043575 - 2⁷ = 78406043447 is a prime.

It is a super-2 number, since 2×78406043575² (a number of 23 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 54072409 + ... + 54073858.

It is an arithmetic number, because the mean of its divisors is an integer number (8381335770).

Almost surely, 2^78406043575 is an apocalyptic number.

78406043575 is a deficient number, since it is larger than the sum of its proper divisors (22169985665).

78406043575 is a wasteful number, since it uses less digits than its factorization.

78406043575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108146306 (or 108146301 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 78406043575 in words is "seventy-eight billion, four hundred six million, forty-three thousand, five hundred seventy-five".