78350205387 has 16 divisors (see below), whose sum is σ = 115421276160. Its totient is φ = 47023481472.

The previous prime is 78350205383. The next prime is 78350205389.

78350205387 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78350205387 - 2² = 78350205383 is a prime.

It is a super-2 number, since 2×78350205387² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78350205383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33396187 + ... + 33398532.

It is an arithmetic number, because the mean of its divisors is an integer number (7213829760).

Almost surely, 2^78350205387 is an apocalyptic number.

78350205387 is a deficient number, since it is larger than the sum of its proper divisors (37071070773).

78350205387 is a wasteful number, since it uses less digits than its factorization.

78350205387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66794762.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 78350205387 in words is "seventy-eight billion, three hundred fifty million, two hundred five thousand, three hundred eighty-seven".