261430545211710 has 64 divisors (see below), whose sum is σ = 722300701427712. Its totient is φ = 59319381263616.

The previous prime is 261430545211631. The next prime is 261430545211733. The reversal of 261430545211710 is 17112545034162.

It is a happy number.

It is a super-2 number, since 2×261430545211710² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4543428742 + ... + 4543486281.

It is an arithmetic number, because the mean of its divisors is an integer number (11285948459808).

Almost surely, 2^{261430545211710} is an apocalyptic number.

261430545211710 is an abundant number, since it is smaller than the sum of its proper divisors (460870156216002).

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

261430545211710 is a wasteful number, since it uses less digits than its factorization.

261430545211710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086915177.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 261430545211710 in words is "two hundred sixty-one trillion, four hundred thirty billion, five hundred forty-five million, two hundred eleven thousand, seven hundred ten".