2166041364480 has 1536 divisors, whose sum is σ = 9218506752000. Its totient is φ = 472024350720.

The previous prime is 2166041364479. The next prime is 2166041364493. The reversal of 2166041364480 is 844631406612.

2166041364480 is a `hidden beast` number, since 2 + 1 + 6 + 604 + 1 + 36 + 4 + 4 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1536).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4739696412 + ... + 4739696868.

It is an arithmetic number, because the mean of its divisors is an integer number (6001632000).

Almost surely, 2^{2166041364480} is an apocalyptic number.

2166041364480 is a gapful number since it is divisible by the number (20) 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 2166041364480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4609253376000).

2166041364480 is an abundant number, since it is smaller than the sum of its proper divisors (7052465387520).

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

2166041364480 is a wasteful number, since it uses less digits than its factorization.

2166041364480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 2166041364480 in words is "two trillion, one hundred sixty-six billion, forty-one million, three hundred sixty-four thousand, four hundred eighty".