2661436910797 has 16 divisors (see below), whose sum is σ = 3159008133120. Its totient is φ = 2194852493808.

The previous prime is 2661436910779. The next prime is 2661436910809. The reversal of 2661436910797 is 7970196341662.

It is a cyclic number.

It is not a de Polignac number, because 2661436910797 - 2¹¹ = 2661436908749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661436610797) 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 15 ways as a sum of consecutive naturals, for example, 68535453 + ... + 68574274.

It is an arithmetic number, because the mean of its divisors is an integer number (197438008320).

Almost surely, 2^{2661436910797} is an apocalyptic number.

It is an amenable number.

2661436910797 is a deficient number, since it is larger than the sum of its proper divisors (497571222323).

2661436910797 is a wasteful number, since it uses less digits than its factorization.

2661436910797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137109840.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 2661436910797 in words is "two trillion, six hundred sixty-one billion, four hundred thirty-six million, nine hundred ten thousand, seven hundred ninety-seven".