60661105511015 has 4 divisors (see below), whose sum is σ = 72793326613224. Its totient is φ = 48528884408808.

The previous prime is 60661105510981. The next prime is 60661105511023. The reversal of 60661105511015 is 51011550116606.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 60661105511015 - 2³⁸ = 60386227604071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 60661105511015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6066110551097 + ... + 6066110551106.

It is an arithmetic number, because the mean of its divisors is an integer number (18198331653306).

Almost surely, 2^{60661105511015} is an apocalyptic number.

60661105511015 is a deficient number, since it is larger than the sum of its proper divisors (12132221102209).

60661105511015 is a wasteful number, since it uses less digits than its factorization.

60661105511015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12132221102208.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 60661105511015 in words is "sixty trillion, six hundred sixty-one billion, one hundred five million, five hundred eleven thousand, fifteen".