71906078436 has 24 divisors (see below), whose sum is σ = 176611421280. Its totient is φ = 22707182592.

The previous prime is 71906078399. The next prime is 71906078449. The reversal of 71906078436 is 63487060917.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 157688541 + ... + 157688996.

It is an arithmetic number, because the mean of its divisors is an integer number (7358809220).

Almost surely, 2^71906078436 is an apocalyptic number.

71906078436 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

71906078436 is an abundant number, since it is smaller than the sum of its proper divisors (104705342844).

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

71906078436 is a wasteful number, since it uses less digits than its factorization.

71906078436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315377563 (or 315377561 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 71906078436 in words is "seventy-one billion, nine hundred six million, seventy-eight thousand, four hundred thirty-six".