2215979975 has 48 divisors (see below), whose sum is σ = 3257410560. Its totient is φ = 1477440000.

The previous prime is 2215979959. The next prime is 2215979993. The reversal of 2215979975 is 5799795122.

It is not a de Polignac number, because 2215979975 - 2⁴ = 2215979959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2215979975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155135 + ... + 168815.

It is an arithmetic number, because the mean of its divisors is an integer number (67862720).

Almost surely, 2^2215979975 is an apocalyptic number.

2215979975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2215979975 is a deficient number, since it is larger than the sum of its proper divisors (1041430585).

2215979975 is a wasteful number, since it uses less digits than its factorization.

2215979975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13752 (or 13747 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 56.

The square root of 2215979975 is about 47074.1964880974. The cubic root of 2215979975 is about 1303.7328559277.

The spelling of 2215979975 in words is "two billion, two hundred fifteen million, nine hundred seventy-nine thousand, nine hundred seventy-five".