618953447355180 has 384 divisors, whose sum is σ = 2142612421017600. Its totient is φ = 130323293328384.

The previous prime is 618953447355109. The next prime is 618953447355181. The reversal of 618953447355180 is 81553744359816.

It is not an unprimeable number, because it can be changed into a prime (618953447355181) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 462003531 + ... + 463341309.

It is an arithmetic number, because the mean of its divisors is an integer number (5579719846400).

Almost surely, 2^{618953447355180} is an apocalyptic number.

618953447355180 is a gapful number since it is divisible by the number (60) 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 618953447355180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071306210508800).

618953447355180 is an abundant number, since it is smaller than the sum of its proper divisors (1523658973662420).

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

618953447355180 is a wasteful number, since it uses less digits than its factorization.

618953447355180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339421 (or 1339419 counting only the distinct ones).

The product of its (nonzero) digits is 435456000, while the sum is 69.

The spelling of 618953447355180 in words is "six hundred eighteen trillion, nine hundred fifty-three billion, four hundred forty-seven million, three hundred fifty-five thousand, one hundred eighty".