78594013545 has 16 divisors (see below), whose sum is σ = 125757919872. Its totient is φ = 41914307840.

The previous prime is 78594013541. The next prime is 78594013559. The reversal of 78594013545 is 54531049587.

It is not a de Polignac number, because 78594013545 - 2² = 78594013541 is a prime.

It is a super-2 number, since 2×78594013545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78594013541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119425 + ... + 414065.

It is an arithmetic number, because the mean of its divisors is an integer number (7859869992).

Almost surely, 2^78594013545 is an apocalyptic number.

It is an amenable number.

78594013545 is a deficient number, since it is larger than the sum of its proper divisors (47163906327).

78594013545 is a wasteful number, since it uses less digits than its factorization.

78594013545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312432.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 78594013545 in words is "seventy-eight billion, five hundred ninety-four million, thirteen thousand, five hundred forty-five".