618803391120 has 80 divisors (see below), whose sum is σ = 1945308742272. Its totient is φ = 162690088960.

The previous prime is 618803391119. The next prime is 618803391133. The reversal of 618803391120 is 21193308816.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×618803391120² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18140337 + ... + 18174416.

Almost surely, 2^618803391120 is an apocalyptic number.

618803391120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

618803391120 is an abundant number, since it is smaller than the sum of its proper divisors (1326505351152).

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

618803391120 is a wasteful number, since it uses less digits than its factorization.

618803391120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36314840 (or 36314834 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

Adding to 618803391120 its reverse (21193308816), we get a palindrome (639996699936).

The spelling of 618803391120 in words is "six hundred eighteen billion, eight hundred three million, three hundred ninety-one thousand, one hundred twenty".