618828815227450 has 48 divisors (see below), whose sum is σ = 1234462089503520. Its totient is φ = 230078955712320.

The previous prime is 618828815227433. The next prime is 618828815227459. The reversal of 618828815227450 is 54722518828816.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (618828815227459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6145220904 + ... + 6145321603.

It is an arithmetic number, because the mean of its divisors is an integer number (25717960197990).

Almost surely, 2^{618828815227450} is an apocalyptic number.

618828815227450 is a deficient number, since it is larger than the sum of its proper divisors (615633274276070).

618828815227450 is a wasteful number, since it uses less digits than its factorization.

618828815227450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290542591 (or 12290542586 counting only the distinct ones).

The product of its (nonzero) digits is 137625600, while the sum is 67.

The spelling of 618828815227450 in words is "six hundred eighteen trillion, eight hundred twenty-eight billion, eight hundred fifteen million, two hundred twenty-seven thousand, four hundred fifty".