969244471681 has 4 divisors (see below), whose sum is σ = 969246596032. Its totient is φ = 969242347332.

The previous prime is 969244471661. The next prime is 969244471693. The reversal of 969244471681 is 186174442969.

969244471681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 186174442969 = 269 ⋅692098301.

It is a cyclic number.

It is not a de Polignac number, because 969244471681 - 2¹³ = 969244463489 is a prime.

It is a super-2 number, since 2×969244471681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (969244471621) 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, 66981 + ... + 1393906.

It is an arithmetic number, because the mean of its divisors is an integer number (242311649008).

Almost surely, 2^969244471681 is an apocalyptic number.

It is an amenable number.

969244471681 is a deficient number, since it is larger than the sum of its proper divisors (2124351).

969244471681 is a wasteful number, since it uses less digits than its factorization.

969244471681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124350.

The product of its digits is 20901888, while the sum is 61.

The spelling of 969244471681 in words is "nine hundred sixty-nine billion, two hundred forty-four million, four hundred seventy-one thousand, six hundred eighty-one".