66260074004855 has 32 divisors (see below), whose sum is σ = 83988634968000. Its totient is φ = 50043422564352.

The previous prime is 66260074004809. The next prime is 66260074004857. The reversal of 66260074004855 is 55840047006266.

It is a cyclic number.

It is not a de Polignac number, because 66260074004855 - 2²² = 66260069810551 is a prime.

It is a super-2 number, since 2×66260074004855² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66260074004797 and 66260074004806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66260074004857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33021509 + ... + 34970561.

It is an arithmetic number, because the mean of its divisors is an integer number (2624644842750).

Almost surely, 2^{66260074004855} is an apocalyptic number.

66260074004855 is a deficient number, since it is larger than the sum of its proper divisors (17728560963145).

66260074004855 is a wasteful number, since it uses less digits than its factorization.

66260074004855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950323.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 66260074004855 in words is "sixty-six trillion, two hundred sixty billion, seventy-four million, four thousand, eight hundred fifty-five".