78145566860570 has 64 divisors (see below), whose sum is σ = 161431361078400. Its totient is φ = 26971659375360.

The previous prime is 78145566860509. The next prime is 78145566860579. The reversal of 78145566860570 is 7506866554187.

78145566860570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78145566860570² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78145566860570.

It is not an unprimeable number, because it can be changed into a prime (78145566860579) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207413849 + ... + 207790268.

It is an arithmetic number, because the mean of its divisors is an integer number (2522365016850).

Almost surely, 2^{78145566860570} is an apocalyptic number.

78145566860570 is an abundant number, since it is smaller than the sum of its proper divisors (83285794217830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78145566860570 is a wasteful number, since it uses less digits than its factorization.

78145566860570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415204223.

The product of its (nonzero) digits is 338688000, while the sum is 68.

The spelling of 78145566860570 in words is "seventy-eight trillion, one hundred forty-five billion, five hundred sixty-six million, eight hundred sixty thousand, five hundred seventy".