10891766077 has 4 divisors (see below), whose sum is σ = 10937338560. Its totient is φ = 10846193596.

The previous prime is 10891766033. The next prime is 10891766099. The reversal of 10891766077 is 77066719801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77066719801 = 131 ⋅588295571.

It is a cyclic number.

It is not a de Polignac number, because 10891766077 - 2¹¹ = 10891764029 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 (10891766027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22785883 + ... + 22786360.

It is an arithmetic number, because the mean of its divisors is an integer number (2734334640).

Almost surely, 2^10891766077 is an apocalyptic number.

It is an amenable number.

10891766077 is a deficient number, since it is larger than the sum of its proper divisors (45572483).

10891766077 is an equidigital number, since it uses as much as digits as its factorization.

10891766077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45572482.

The product of its (nonzero) digits is 889056, while the sum is 52.

The spelling of 10891766077 in words is "ten billion, eight hundred ninety-one million, seven hundred sixty-six thousand, seventy-seven".