2187163175456 has 24 divisors (see below), whose sum is σ = 4921117145280. Its totient is φ = 937355646528.

The previous prime is 2187163175339. The next prime is 2187163175459. The reversal of 2187163175456 is 6545713617812.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (2187163175459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4882060436 + ... + 4882060883.

It is an arithmetic number, because the mean of its divisors is an integer number (205046547720).

Almost surely, 2^{2187163175456} is an apocalyptic number.

It is an amenable number.

2187163175456 is an abundant number, since it is smaller than the sum of its proper divisors (2733953969824).

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

2187163175456 is an equidigital number, since it uses as much as digits as its factorization.

2187163175456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764121336 (or 9764121328 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The spelling of 2187163175456 in words is "two trillion, one hundred eighty-seven billion, one hundred sixty-three million, one hundred seventy-five thousand, four hundred fifty-six".