64202762989 has 8 divisors (see below), whose sum is σ = 68064704568. Its totient is φ = 60350300160.

The previous prime is 64202762983. The next prime is 64202762993. The reversal of 64202762989 is 98926720246.

It can be written as a sum of positive squares in 4 ways, for example, as 5477480100 + 58725282889 = 74010^2 + 242333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64202762989 - 2⁷ = 64202762861 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 (64202762983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2355732 + ... + 2382829.

It is an arithmetic number, because the mean of its divisors is an integer number (8508088071).

Almost surely, 2^64202762989 is an apocalyptic number.

It is an amenable number.

64202762989 is a deficient number, since it is larger than the sum of its proper divisors (3861941579).

64202762989 is a wasteful number, since it uses less digits than its factorization.

64202762989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739375.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 64202762989 in words is "sixty-four billion, two hundred two million, seven hundred sixty-two thousand, nine hundred eighty-nine".