78266371434 has 16 divisors (see below), whose sum is σ = 165740551488. Its totient is φ = 24554155712.

The previous prime is 78266371411. The next prime is 78266371483. The reversal of 78266371434 is 43417366287.

It is a super-2 number, since 2×78266371434² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383658582 + ... + 383658785.

It is an arithmetic number, because the mean of its divisors is an integer number (10358784468).

Almost surely, 2^78266371434 is an apocalyptic number.

78266371434 is an abundant number, since it is smaller than the sum of its proper divisors (87474180054).

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

78266371434 is a wasteful number, since it uses less digits than its factorization.

78266371434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767317389.

The product of its digits is 4064256, while the sum is 51.

The spelling of 78266371434 in words is "seventy-eight billion, two hundred sixty-six million, three hundred seventy-one thousand, four hundred thirty-four".