660615026145 has 32 divisors (see below), whose sum is σ = 1065414518784. Its totient is φ = 349519684800.

The previous prime is 660615026101. The next prime is 660615026161. The reversal of 660615026145 is 541620516066.

It is not a de Polignac number, because 660615026145 - 2¹⁵ = 660614993377 is a prime.

It is a super-2 number, since 2×660615026145² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 660615026097 and 660615026106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5884590 + ... + 5995800.

It is an arithmetic number, because the mean of its divisors is an integer number (33294203712).

Almost surely, 2^660615026145 is an apocalyptic number.

It is an amenable number.

660615026145 is a deficient number, since it is larger than the sum of its proper divisors (404799492639).

660615026145 is a wasteful number, since it uses less digits than its factorization.

660615026145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114373.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 660615026145 in words is "six hundred sixty billion, six hundred fifteen million, twenty-six thousand, one hundred forty-five".