261462521034634 has 16 divisors (see below), whose sum is σ = 409263754173120. Its totient is φ = 125041771562400.

The previous prime is 261462521034629. The next prime is 261462521034661. The reversal of 261462521034634 is 436430125264162.

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, 124426419 + ... + 126510310.

It is an arithmetic number, because the mean of its divisors is an integer number (25578984635820).

Almost surely, 2^{261462521034634} is an apocalyptic number.

261462521034634 is a deficient number, since it is larger than the sum of its proper divisors (147801233138486).

261462521034634 is a wasteful number, since it uses less digits than its factorization.

261462521034634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250959405.

The product of its (nonzero) digits is 4976640, while the sum is 49.

Adding to 261462521034634 its reverse (436430125264162), we get a palindrome (697892646298796).

The spelling of 261462521034634 in words is "two hundred sixty-one trillion, four hundred sixty-two billion, five hundred twenty-one million, thirty-four thousand, six hundred thirty-four".