662078801671 has 40 divisors (see below), whose sum is σ = 823789785600. Its totient is φ = 530210870784.

The previous prime is 662078801621. The next prime is 662078801677. The reversal of 662078801671 is 176108870266.

662078801671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 662078801671 - 2²³ = 662070413063 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 (662078801677) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5532730 + ... + 5651128.

It is an arithmetic number, because the mean of its divisors is an integer number (20594744640).

Almost surely, 2^662078801671 is an apocalyptic number.

662078801671 is a deficient number, since it is larger than the sum of its proper divisors (161710983929).

662078801671 is a wasteful number, since it uses less digits than its factorization.

662078801671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118581 (or 118560 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 662078801671 in words is "six hundred sixty-two billion, seventy-eight million, eight hundred one thousand, six hundred seventy-one".