261134614036 has 24 divisors (see below), whose sum is σ = 461322378440. Its totient is φ = 129328970112.

The previous prime is 261134614019. The next prime is 261134614049. The reversal of 261134614036 is 630416431162.

It can be written as a sum of positive squares in 4 ways, for example, as 68199322500 + 192935291536 = 261150^2 + 439244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 261134613986 and 261134614004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326250 + ... + 1510366.

Almost surely, 2^261134614036 is an apocalyptic number.

It is an amenable number.

261134614036 is a deficient number, since it is larger than the sum of its proper divisors (200187764404).

261134614036 is a wasteful number, since it uses less digits than its factorization.

261134614036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187483 (or 187481 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 261134614036 in words is "two hundred sixty-one billion, one hundred thirty-four million, six hundred fourteen thousand, thirty-six".