256611102445 has 8 divisors (see below), whose sum is σ = 318551713560. Its totient is φ = 198209954880.

The previous prime is 256611102431. The next prime is 256611102467. The reversal of 256611102445 is 544201116652.

It can be written as a sum of positive squares in 4 ways, for example, as 11540560329 + 245070542116 = 107427^2 + 495046^2 .

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

It is not a de Polignac number, because 256611102445 - 2²¹ = 256609005293 is a prime.

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, 884865726 + ... + 884866015.

It is an arithmetic number, because the mean of its divisors is an integer number (39818964195).

Almost surely, 2^256611102445 is an apocalyptic number.

It is an amenable number.

256611102445 is a deficient number, since it is larger than the sum of its proper divisors (61940611115).

256611102445 is a wasteful number, since it uses less digits than its factorization.

256611102445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769731775.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 256611102445 in words is "two hundred fifty-six billion, six hundred eleven million, one hundred two thousand, four hundred forty-five".