261224045534 has 8 divisors (see below), whose sum is σ = 404475941568. Its totient is φ = 126398731680.

The previous prime is 261224045527. The next prime is 261224045567. The reversal of 261224045534 is 435540422162.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106645467 + ... + 2106645590.

It is an arithmetic number, because the mean of its divisors is an integer number (50559492696).

Almost surely, 2^261224045534 is an apocalyptic number.

261224045534 is a deficient number, since it is larger than the sum of its proper divisors (143251896034).

261224045534 is a wasteful number, since it uses less digits than its factorization.

261224045534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213291090.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 261224045534 its reverse (435540422162), we get a palindrome (696764467696).

The spelling of 261224045534 in words is "two hundred sixty-one billion, two hundred twenty-four million, forty-five thousand, five hundred thirty-four".