10321761977 has 4 divisors (see below), whose sum is σ = 10321973760. Its totient is φ = 10321550196.

The previous prime is 10321761971. The next prime is 10321761997. The reversal of 10321761977 is 77916712301.

It is a happy number.

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: 77916712301 = 90401 ⋅861901.

It is a cyclic number.

It is not a de Polignac number, because 10321761977 - 2¹² = 10321757881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10321761971) 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 3 ways as a sum of consecutive naturals, for example, 8168 + ... + 143910.

It is an arithmetic number, because the mean of its divisors is an integer number (2580493440).

Almost surely, 2^10321761977 is an apocalyptic number.

It is an amenable number.

10321761977 is a deficient number, since it is larger than the sum of its proper divisors (211783).

10321761977 is an equidigital number, since it uses as much as digits as its factorization.

10321761977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211782.

The product of its (nonzero) digits is 111132, while the sum is 44.

The spelling of 10321761977 in words is "ten billion, three hundred twenty-one million, seven hundred sixty-one thousand, nine hundred seventy-seven".