261430545211700 has 36 divisors (see below), whose sum is σ = 567368293188480. Its totient is φ = 104560418991840.

The previous prime is 261430545211631. The next prime is 261430545211733. The reversal of 261430545211700 is 7112545034162.

261430545211700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146597930 + ... + 148370529.

Almost surely, 2^{261430545211700} is an apocalyptic number.

261430545211700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261430545211700 is an abundant number, since it is smaller than the sum of its proper divisors (305937747976780).

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

261430545211700 is a wasteful number, since it uses less digits than its factorization.

261430545211700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294977336 (or 294977329 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 261430545211700 in words is "two hundred sixty-one trillion, four hundred thirty billion, five hundred forty-five million, two hundred eleven thousand, seven hundred".