1101257764991 has 2 divisors, whose sum is σ = 1101257764992. Its totient is φ = 1101257764990.

The previous prime is 1101257764987. The next prime is 1101257765059. The reversal of 1101257764991 is 1994677521011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101257764991 - 2² = 1101257764987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101257764921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550628882495 + 550628882496.

It is an arithmetic number, because the mean of its divisors is an integer number (550628882496).

Almost surely, 2^{1101257764991} is an apocalyptic number.

1101257764991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101257764991 is an equidigital number, since it uses as much as digits as its factorization.

1101257764991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 53.

The spelling of 1101257764991 in words is "one trillion, one hundred one billion, two hundred fifty-seven million, seven hundred sixty-four thousand, nine hundred ninety-one".