662878362881 has 4 divisors (see below), whose sum is σ = 757575271872. Its totient is φ = 568181453892.

The previous prime is 662878362847. The next prime is 662878362889. The reversal of 662878362881 is 188263878266.

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 662878362881 - 2³⁴ = 645698493697 is a prime.

It is a super-2 number, since 2×662878362881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662878362889) 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, 47348454485 + ... + 47348454498.

It is an arithmetic number, because the mean of its divisors is an integer number (189393817968).

Almost surely, 2^662878362881 is an apocalyptic number.

It is an amenable number.

662878362881 is a deficient number, since it is larger than the sum of its proper divisors (94696908991).

662878362881 is an equidigital number, since it uses as much as digits as its factorization.

662878362881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94696908990.

The product of its digits is 74317824, while the sum is 65.

The spelling of 662878362881 in words is "six hundred sixty-two billion, eight hundred seventy-eight million, three hundred sixty-two thousand, eight hundred eighty-one".