270090818921 has 24 divisors (see below), whose sum is σ = 360789233760. Its totient is φ = 199383508800.

The previous prime is 270090818917. The next prime is 270090818929. The reversal of 270090818921 is 129818090072.

It is not a de Polignac number, because 270090818921 - 2² = 270090818917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (270090818929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13176500 + ... + 13196981.

It is an arithmetic number, because the mean of its divisors is an integer number (15032884740).

Almost surely, 2^270090818921 is an apocalyptic number.

It is an amenable number.

270090818921 is a deficient number, since it is larger than the sum of its proper divisors (90698414839).

270090818921 is a wasteful number, since it uses less digits than its factorization.

270090818921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26373525 (or 26373518 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 270090818921 in words is "two hundred seventy billion, ninety million, eight hundred eighteen thousand, nine hundred twenty-one".