1015120342661 has 16 divisors (see below), whose sum is σ = 1097764980480. Its totient is φ = 935025999360.

The previous prime is 1015120342657. The next prime is 1015120342667. The reversal of 1015120342661 is 1662430215101.

It is a cyclic number.

It is not a de Polignac number, because 1015120342661 - 2² = 1015120342657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015120342667) 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, 23196281 + ... + 23240001.

It is an arithmetic number, because the mean of its divisors is an integer number (68610311280).

Almost surely, 2^{1015120342661} is an apocalyptic number.

It is an amenable number.

1015120342661 is a deficient number, since it is larger than the sum of its proper divisors (82644637819).

1015120342661 is a wasteful number, since it uses less digits than its factorization.

1015120342661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72844.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 1015120342661 its reverse (1662430215101), we get a palindrome (2677550557762).

The spelling of 1015120342661 in words is "one trillion, fifteen billion, one hundred twenty million, three hundred forty-two thousand, six hundred sixty-one".