660026340465131 has 4 divisors (see below), whose sum is σ = 666561254727264. Its totient is φ = 653491426203000.

The previous prime is 660026340465091. The next prime is 660026340465157. The reversal of 660026340465131 is 131564043620066.

660026340465131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660026340465131 is a prime.

It is a super-2 number, since 2×660026340465131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660056340465131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3267457130915 + ... + 3267457131116.

It is an arithmetic number, because the mean of its divisors is an integer number (166640313681816).

Almost surely, 2^{660026340465131} is an apocalyptic number.

660026340465131 is a deficient number, since it is larger than the sum of its proper divisors (6534914262133).

660026340465131 is a wasteful number, since it uses less digits than its factorization.

660026340465131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6534914262132.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 660026340465131 in words is "six hundred sixty trillion, twenty-six billion, three hundred forty million, four hundred sixty-five thousand, one hundred thirty-one".