260421350655 has 16 divisors (see below), whose sum is σ = 417159250560. Its totient is φ = 138729690528.

The previous prime is 260421350653. The next prime is 260421350669. The reversal of 260421350655 is 556053124062.

It is not a de Polignac number, because 260421350655 - 2¹ = 260421350653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260421350653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10092717 + ... + 10118486.

It is an arithmetic number, because the mean of its divisors is an integer number (26072453160).

Almost surely, 2^260421350655 is an apocalyptic number.

260421350655 is a deficient number, since it is larger than the sum of its proper divisors (156737899905).

260421350655 is a wasteful number, since it uses less digits than its factorization.

260421350655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20212070.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 260421350655 in words is "two hundred sixty billion, four hundred twenty-one million, three hundred fifty thousand, six hundred fifty-five".