65415115232661 has 32 divisors (see below), whose sum is σ = 92843924976000. Its totient is φ = 40849869570048.

The previous prime is 65415115232651. The next prime is 65415115232669. The reversal of 65415115232661 is 16623251151456.

It is not a de Polignac number, because 65415115232661 - 2¹⁹ = 65415114708373 is a prime.

It is a super-2 number, since 2×65415115232661² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65415115232661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65415115232669) 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, 490842511 + ... + 490975763.

It is an arithmetic number, because the mean of its divisors is an integer number (2901372655500).

Almost surely, 2^{65415115232661} is an apocalyptic number.

It is an amenable number.

65415115232661 is a deficient number, since it is larger than the sum of its proper divisors (27428809743339).

65415115232661 is a wasteful number, since it uses less digits than its factorization.

65415115232661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230133.

The product of its digits is 1296000, while the sum is 48.

The spelling of 65415115232661 in words is "sixty-five trillion, four hundred fifteen billion, one hundred fifteen million, two hundred thirty-two thousand, six hundred sixty-one".