611256566355 has 16 divisors (see below), whose sum is σ = 1000754937600. Its totient is φ = 318422024928.

The previous prime is 611256566321. The next prime is 611256566359. The reversal of 611256566355 is 553665652116.

It is not a de Polignac number, because 611256566355 - 2⁸ = 611256566099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611256566298 and 611256566307.

It is not an unprimeable number, because it can be changed into a prime (611256566359) 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, 473841655 + ... + 473842944.

It is an arithmetic number, because the mean of its divisors is an integer number (62547183600).

Almost surely, 2^611256566355 is an apocalyptic number.

611256566355 is a deficient number, since it is larger than the sum of its proper divisors (389498371245).

611256566355 is a wasteful number, since it uses less digits than its factorization.

611256566355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947684650.

The product of its digits is 4860000, while the sum is 51.

The spelling of 611256566355 in words is "six hundred eleven billion, two hundred fifty-six million, five hundred sixty-six thousand, three hundred fifty-five".