261146550623 has 8 divisors (see below), whose sum is σ = 298529387520. Its totient is φ = 223782760440.

The previous prime is 261146550569. The next prime is 261146550631. The reversal of 261146550623 is 326055641162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261146550623 - 2⁶ = 261146550559 is a prime.

It is a super-2 number, since 2×261146550623² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261146550653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4732283 + ... + 4787148.

It is an arithmetic number, because the mean of its divisors is an integer number (37316173440).

Almost surely, 2^261146550623 is an apocalyptic number.

261146550623 is a deficient number, since it is larger than the sum of its proper divisors (37382836897).

261146550623 is an equidigital number, since it uses as much as digits as its factorization.

261146550623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523357.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 261146550623 in words is "two hundred sixty-one billion, one hundred forty-six million, five hundred fifty thousand, six hundred twenty-three".