78152071475578 has 32 divisors (see below), whose sum is σ = 126306226627200. Its totient is φ = 36131599494144.

The previous prime is 78152071475557. The next prime is 78152071475579. The reversal of 78152071475578 is 87557417025187.

It is a super-2 number, since 2×78152071475578² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78152071475579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8898063 + ... + 15345346.

It is an arithmetic number, because the mean of its divisors is an integer number (3947069582100).

Almost surely, 2^{78152071475578} is an apocalyptic number.

78152071475578 is a deficient number, since it is larger than the sum of its proper divisors (48154155151622).

78152071475578 is a wasteful number, since it uses less digits than its factorization.

78152071475578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24245094.

The product of its (nonzero) digits is 153664000, while the sum is 67.

The spelling of 78152071475578 in words is "seventy-eight trillion, one hundred fifty-two billion, seventy-one million, four hundred seventy-five thousand, five hundred seventy-eight".