261302131456 has 36 divisors (see below), whose sum is σ = 523282678072. Its totient is φ = 130225453056.

The previous prime is 261302131417. The next prime is 261302131477. The reversal of 261302131456 is 654131203162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583805 + ... + 1740988.

Almost surely, 2^261302131456 is an apocalyptic number.

It is an amenable number.

261302131456 is an abundant number, since it is smaller than the sum of its proper divisors (261980546616).

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

261302131456 is an equidigital number, since it uses as much as digits as its factorization.

261302131456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325116 (or 3325102 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 261302131456 in words is "two hundred sixty-one billion, three hundred two million, one hundred thirty-one thousand, four hundred fifty-six".