71718164380 has 24 divisors (see below), whose sum is σ = 157156326432. Its totient is φ = 27439993152.

The previous prime is 71718164369. The next prime is 71718164429. The reversal of 71718164380 is 8346181717.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 71718164380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77954067 + ... + 77954986.

It is an arithmetic number, because the mean of its divisors is an integer number (6548180268).

Almost surely, 2^71718164380 is an apocalyptic number.

It is an amenable number.

71718164380 is an abundant number, since it is smaller than the sum of its proper divisors (85438162052).

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

71718164380 is a wasteful number, since it uses less digits than its factorization.

71718164380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155909085 (or 155909083 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 71718164380 in words is "seventy-one billion, seven hundred eighteen million, one hundred sixty-four thousand, three hundred eighty".