1015660111061 has 8 divisors (see below), whose sum is σ = 1076919674880. Its totient is φ = 955180924128.

The previous prime is 1015660111033. The next prime is 1015660111093. The reversal of 1015660111061 is 1601110665101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1015660111061 - 2¹⁴ = 1015660094677 is a prime.

It is a super-2 number, since 2×1015660111061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015660116061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195091541 + ... + 195096746.

It is an arithmetic number, because the mean of its divisors is an integer number (134614959360).

Almost surely, 2^{1015660111061} is an apocalyptic number.

It is an amenable number.

1015660111061 is a deficient number, since it is larger than the sum of its proper divisors (61259563819).

1015660111061 is a wasteful number, since it uses less digits than its factorization.

1015660111061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390188443.

The product of its (nonzero) digits is 1080, while the sum is 29.

Adding to 1015660111061 its reverse (1601110665101), we get a palindrome (2616770776162).

The spelling of 1015660111061 in words is "one trillion, fifteen billion, six hundred sixty million, one hundred eleven thousand, sixty-one".