2128949150215 has 4 divisors (see below), whose sum is σ = 2554738980264. Its totient is φ = 1703159320168.

The previous prime is 2128949150191. The next prime is 2128949150233. The reversal of 2128949150215 is 5120519498212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2128949150215 - 2⁹ = 2128949149703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212894915017 + ... + 212894915026.

It is an arithmetic number, because the mean of its divisors is an integer number (638684745066).

Almost surely, 2^{2128949150215} is an apocalyptic number.

2128949150215 is a deficient number, since it is larger than the sum of its proper divisors (425789830049).

2128949150215 is an equidigital number, since it uses as much as digits as its factorization.

2128949150215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425789830048.

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 2128949150215 in words is "two trillion, one hundred twenty-eight billion, nine hundred forty-nine million, one hundred fifty thousand, two hundred fifteen".