256611366645070 has 16 divisors (see below), whose sum is σ = 481983088655520. Its totient is φ = 98181740281504.

The previous prime is 256611366645031. The next prime is 256611366645077. The reversal of 256611366645070 is 70546663116652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256611366644996 and 256611366645014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256611366645077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557850796825 + ... + 557850797284.

It is an arithmetic number, because the mean of its divisors is an integer number (30123943040970).

Almost surely, 2^{256611366645070} is an apocalyptic number.

256611366645070 is a deficient number, since it is larger than the sum of its proper divisors (225371722010450).

256611366645070 is a wasteful number, since it uses less digits than its factorization.

256611366645070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115701594139.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 256611366645070 in words is "two hundred fifty-six trillion, six hundred eleven billion, three hundred sixty-six million, six hundred forty-five thousand, seventy".