261057122284 has 24 divisors (see below), whose sum is σ = 526225387520. Its totient is φ = 111000664656.

The previous prime is 261057122269. The next prime is 261057122297. The reversal of 261057122284 is 482221750162.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36703014 + ... + 36710125.

Almost surely, 2^261057122284 is an apocalyptic number.

It is an amenable number.

261057122284 is an abundant number, since it is smaller than the sum of its proper divisors (265168265236).

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

261057122284 is a wasteful number, since it uses less digits than its factorization.

261057122284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73413277 (or 73413275 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 261057122284 in words is "two hundred sixty-one billion, fifty-seven million, one hundred twenty-two thousand, two hundred eighty-four".