261462440140662 has 128 divisors (see below), whose sum is σ = 573508462399488. Its totient is φ = 79108958822400.

The previous prime is 261462440140639. The next prime is 261462440140687. The reversal of 261462440140662 is 266041044264162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3801894337 + ... + 3801963107.

It is an arithmetic number, because the mean of its divisors is an integer number (4480534862496).

Almost surely, 2^{261462440140662} is an apocalyptic number.

261462440140662 is an abundant number, since it is smaller than the sum of its proper divisors (312046022258826).

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

261462440140662 is a wasteful number, since it uses less digits than its factorization.

261462440140662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72934.

The product of its (nonzero) digits is 2654208, while the sum is 48.

The spelling of 261462440140662 in words is "two hundred sixty-one trillion, four hundred sixty-two billion, four hundred forty million, one hundred forty thousand, six hundred sixty-two".