665156466045 has 192 divisors, whose sum is σ = 1314092482560. Its totient is φ = 309693196800.

The previous prime is 665156465993. The next prime is 665156466067. The reversal of 665156466045 is 540664651566.

665156466045 is a `hidden beast` number, since 6 + 6 + 515 + 64 + 6 + 60 + 4 + 5 = 666.

It is not a de Polignac number, because 665156466045 - 2¹⁰ = 665156465021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665156465982 and 665156466000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 46084980 + ... + 46099410.

It is an arithmetic number, because the mean of its divisors is an integer number (6844231680).

Almost surely, 2^665156466045 is an apocalyptic number.

It is an amenable number.

665156466045 is a deficient number, since it is larger than the sum of its proper divisors (648936016515).

665156466045 is a wasteful number, since it uses less digits than its factorization.

665156466045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14576 (or 14573 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 54.

The spelling of 665156466045 in words is "six hundred sixty-five billion, one hundred fifty-six million, four hundred sixty-six thousand, forty-five".