851100977663 has 4 divisors (see below), whose sum is σ = 861874407840. Its totient is φ = 840327547488.

The previous prime is 851100977621. The next prime is 851100977669. The reversal of 851100977663 is 366779001158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366779001158 = 2 ⋅183389500579.

It is a cyclic number.

It is not a de Polignac number, because 851100977663 - 2⁶ = 851100977599 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 (851100977669) 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, 5386714970 + ... + 5386715127.

It is an arithmetic number, because the mean of its divisors is an integer number (215468601960).

Almost surely, 2^851100977663 is an apocalyptic number.

851100977663 is a deficient number, since it is larger than the sum of its proper divisors (10773430177).

851100977663 is a wasteful number, since it uses less digits than its factorization.

851100977663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10773430176.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 851100977663 in words is "eight hundred fifty-one billion, one hundred million, nine hundred seventy-seven thousand, six hundred sixty-three".