660838763461 has 16 divisors (see below), whose sum is σ = 677769216768. Its totient is φ = 643947609600.

The previous prime is 660838763449. The next prime is 660838763467. The reversal of 660838763461 is 164367838066.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 660838763461 - 2¹⁵ = 660838730693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660838763396 and 660838763405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660838763467) 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, 228109965 + ... + 228112861.

It is an arithmetic number, because the mean of its divisors is an integer number (42360576048).

Almost surely, 2^660838763461 is an apocalyptic number.

It is an amenable number.

660838763461 is a deficient number, since it is larger than the sum of its proper divisors (16930453307).

660838763461 is a wasteful number, since it uses less digits than its factorization.

660838763461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692.

The product of its (nonzero) digits is 20901888, while the sum is 58.

The spelling of 660838763461 in words is "six hundred sixty billion, eight hundred thirty-eight million, seven hundred sixty-three thousand, four hundred sixty-one".