802872120961 has 4 divisors (see below), whose sum is σ = 845128548400. Its totient is φ = 760615693524.

The previous prime is 802872120931. The next prime is 802872120971. The reversal of 802872120961 is 169021278208.

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.

It is a cyclic number.

It is not a de Polignac number, because 802872120961 - 2³¹ = 800724637313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802872120931) 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, 21128213691 + ... + 21128213728.

It is an arithmetic number, because the mean of its divisors is an integer number (211282137100).

Almost surely, 2^802872120961 is an apocalyptic number.

It is an amenable number.

802872120961 is a deficient number, since it is larger than the sum of its proper divisors (42256427439).

802872120961 is a wasteful number, since it uses less digits than its factorization.

802872120961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42256427438.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 802872120961 in words is "eight hundred two billion, eight hundred seventy-two million, one hundred twenty thousand, nine hundred sixty-one".