261430470245752 has 16 divisors (see below), whose sum is σ = 490350985399440. Its totient is φ = 130670207472576.

The previous prime is 261430470245741. The next prime is 261430470245773. The reversal of 261430470245752 is 257542074034162.

It is a self number, because there is not a number n which added to its sum of digits gives 261430470245752.

It is a congruent number.

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, 5628431613 + ... + 5628478060.

It is an arithmetic number, because the mean of its divisors is an integer number (30646936587465).

Almost surely, 2^{261430470245752} is an apocalyptic number.

It is an amenable number.

261430470245752 is a deficient number, since it is larger than the sum of its proper divisors (228920515153688).

261430470245752 is a wasteful number, since it uses less digits than its factorization.

261430470245752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11256912582 (or 11256912578 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 261430470245752 in words is "two hundred sixty-one trillion, four hundred thirty billion, four hundred seventy million, two hundred forty-five thousand, seven hundred fifty-two".