662640537433 has 32 divisors (see below), whose sum is σ = 789419520000. Its totient is φ = 544507522944.

The previous prime is 662640537401. The next prime is 662640537511. The reversal of 662640537433 is 334735046266.

It is not a de Polignac number, because 662640537433 - 2⁵ = 662640537401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (662640537733) 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 31 ways as a sum of consecutive naturals, for example, 3027318 + ... + 3238816.

It is an arithmetic number, because the mean of its divisors is an integer number (24669360000).

Almost surely, 2^662640537433 is an apocalyptic number.

It is an amenable number.

662640537433 is a deficient number, since it is larger than the sum of its proper divisors (126778982567).

662640537433 is a wasteful number, since it uses less digits than its factorization.

662640537433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211749.

The product of its (nonzero) digits is 6531840, while the sum is 49.

The spelling of 662640537433 in words is "six hundred sixty-two billion, six hundred forty million, five hundred thirty-seven thousand, four hundred thirty-three".