71839787706 has 64 divisors (see below), whose sum is σ = 160968360960. Its totient is φ = 23748182640.

The previous prime is 71839787699. The next prime is 71839787731. The reversal of 71839787706 is 60778793817.

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, 16600515 + ... + 16604841.

It is an arithmetic number, because the mean of its divisors is an integer number (2515130640).

Almost surely, 2^71839787706 is an apocalyptic number.

71839787706 is an abundant number, since it is smaller than the sum of its proper divisors (89128573254).

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

71839787706 is a wasteful number, since it uses less digits than its factorization.

71839787706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816 (or 6810 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 63.

The spelling of 71839787706 in words is "seventy-one billion, eight hundred thirty-nine million, seven hundred eighty-seven thousand, seven hundred six".