64767490509 has 8 divisors (see below), whose sum is σ = 86375581120. Its totient is φ = 43168863456.

The previous prime is 64767490507. The next prime is 64767490517. The reversal of 64767490509 is 90509476746.

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

It is not a de Polignac number, because 64767490509 - 2¹ = 64767490507 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 (64767490507) 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, 2349904 + ... + 2377305.

It is an arithmetic number, because the mean of its divisors is an integer number (10796947640).

Almost surely, 2^64767490509 is an apocalyptic number.

It is an amenable number.

64767490509 is a deficient number, since it is larger than the sum of its proper divisors (21608090611).

64767490509 is a wasteful number, since it uses less digits than its factorization.

64767490509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731779.

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 64767490509 in words is "sixty-four billion, seven hundred sixty-seven million, four hundred ninety thousand, five hundred nine".