16618464954 has 240 divisors, whose sum is σ = 49398686568. Its totient is φ = 4124639232.

The previous prime is 16618464949. The next prime is 16618465009. The reversal of 16618464954 is 45946481661.

16618464954 is a `hidden beast` number, since 16 + 61 + 84 + 6 + 495 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16339741929 + 278723025 = 127827^2 + 16695^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 16618464954.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1749562 + ... + 1759034.

Almost surely, 2^16618464954 is an apocalyptic number.

16618464954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16618464954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24699343284).

16618464954 is an abundant number, since it is smaller than the sum of its proper divisors (32780221614).

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

16618464954 is a wasteful number, since it uses less digits than its factorization.

16618464954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531 (or 9515 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 16618464954 in words is "sixteen billion, six hundred eighteen million, four hundred sixty-four thousand, nine hundred fifty-four".