2691312880733 has 2 divisors, whose sum is σ = 2691312880734. Its totient is φ = 2691312880732.

The previous prime is 2691312880687. The next prime is 2691312880787. The reversal of 2691312880733 is 3370882131962.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2459260649209 + 232052231524 = 1568203^2 + 481718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2691312880733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2691312880033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345656440366 + 1345656440367.

It is an arithmetic number, because the mean of its divisors is an integer number (1345656440367).

Almost surely, 2^{2691312880733} is an apocalyptic number.

It is an amenable number.

2691312880733 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691312880733 is an equidigital number, since it uses as much as digits as its factorization.

2691312880733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 2691312880733 in words is "two trillion, six hundred ninety-one billion, three hundred twelve million, eight hundred eighty thousand, seven hundred thirty-three".