2691076019661 has 12 divisors (see below), whose sum is σ = 3887513535360. Its totient is φ = 1793864343240.

The previous prime is 2691076019657. The next prime is 2691076019711. The reversal of 2691076019661 is 1669106701962.

It is a happy number.

2691076019661 is a `hidden beast` number, since 26 + 9 + 1 + 0 + 7 + 601 + 9 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 2691076019661 - 2² = 2691076019657 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2691076019598 and 2691076019607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691076019651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15436551 + ... + 15609908.

It is an arithmetic number, because the mean of its divisors is an integer number (323959461280).

Almost surely, 2^{2691076019661} is an apocalyptic number.

It is an amenable number.

2691076019661 is a deficient number, since it is larger than the sum of its proper divisors (1196437515699).

2691076019661 is a wasteful number, since it uses less digits than its factorization.

2691076019661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31056096 (or 31056093 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 2691076019661 in words is "two trillion, six hundred ninety-one billion, seventy-six million, nineteen thousand, six hundred sixty-one".