261012033696 has 24 divisors (see below), whose sum is σ = 685156588704. Its totient is φ = 87004011200.

The previous prime is 261012033677. The next prime is 261012033743. The reversal of 261012033696 is 696330210162.

It is a tau number, because it is divible by the number of its divisors (24).

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, 1359437580 + ... + 1359437771.

It is an arithmetic number, because the mean of its divisors is an integer number (28548191196).

Almost surely, 2^261012033696 is an apocalyptic number.

It is an amenable number.

261012033696 is an abundant number, since it is smaller than the sum of its proper divisors (424144555008).

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

261012033696 is a wasteful number, since it uses less digits than its factorization.

261012033696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718875364 (or 2718875356 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 261012033696 in words is "two hundred sixty-one billion, twelve million, thirty-three thousand, six hundred ninety-six".