260020305251 has 16 divisors (see below), whose sum is σ = 302014218240. Its totient is φ = 219258804960.

The previous prime is 260020305247. The next prime is 260020305271. The reversal of 260020305251 is 152503020062.

It is a cyclic number.

It is not a de Polignac number, because 260020305251 - 2² = 260020305247 is a prime.

It is a super-2 number, since 2×260020305251² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260020305251.

It is not an unprimeable number, because it can be changed into a prime (260020305271) 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, 695555 + ... + 1001916.

It is an arithmetic number, because the mean of its divisors is an integer number (18875888640).

Almost surely, 2^260020305251 is an apocalyptic number.

260020305251 is a deficient number, since it is larger than the sum of its proper divisors (41993912989).

260020305251 is a wasteful number, since it uses less digits than its factorization.

260020305251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697834.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 260020305251 in words is "two hundred sixty billion, twenty million, three hundred five thousand, two hundred fifty-one".