64570712019 has 8 divisors (see below), whose sum is σ = 93921035712. Its totient is φ = 39133764840.

The previous prime is 64570711999. The next prime is 64570712117. The reversal of 64570712019 is 91021707546.

It is a happy number.

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

It is not a de Polignac number, because 64570712019 - 2⁵ = 64570711987 is a prime.

It is a super-2 number, since 2×64570712019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64570712719) 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, 978344089 + ... + 978344154.

It is an arithmetic number, because the mean of its divisors is an integer number (11740129464).

Almost surely, 2^64570712019 is an apocalyptic number.

64570712019 is a deficient number, since it is larger than the sum of its proper divisors (29350323693).

64570712019 is a wasteful number, since it uses less digits than its factorization.

64570712019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956688257.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 64570712019 in words is "sixty-four billion, five hundred seventy million, seven hundred twelve thousand, nineteen".