78152310272805 has 32 divisors (see below), whose sum is σ = 125992903411200. Its totient is φ = 41365066070592.

The previous prime is 78152310272797. The next prime is 78152310272819. The reversal of 78152310272805 is 50827201325187.

It is not a de Polignac number, because 78152310272805 - 2³ = 78152310272797 is a prime.

It is a super-2 number, since 2×78152310272805² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2087659 + ... + 12675288.

It is an arithmetic number, because the mean of its divisors is an integer number (3937278231600).

Almost surely, 2^{78152310272805} is an apocalyptic number.

It is an amenable number.

78152310272805 is a deficient number, since it is larger than the sum of its proper divisors (47840593138395).

78152310272805 is a wasteful number, since it uses less digits than its factorization.

78152310272805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14765633.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 78152310272805 in words is "seventy-eight trillion, one hundred fifty-two billion, three hundred ten million, two hundred seventy-two thousand, eight hundred five".