718869812220 has 384 divisors, whose sum is σ = 2622252165120. Its totient is φ = 160103485440.

The previous prime is 718869812207. The next prime is 718869812279. The reversal of 718869812220 is 22218968817.

It is a super-2 number, since 2×718869812220² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24657492 + ... + 24686628.

It is an arithmetic number, because the mean of its divisors is an integer number (6828781680).

Almost surely, 2^718869812220 is an apocalyptic number.

718869812220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718869812220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1311126082560).

718869812220 is an abundant number, since it is smaller than the sum of its proper divisors (1903382352900).

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

718869812220 is a wasteful number, since it uses less digits than its factorization.

718869812220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29330 (or 29322 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 718869812220 in words is "seven hundred eighteen billion, eight hundred sixty-nine million, eight hundred twelve thousand, two hundred twenty".