64402537065 has 8 divisors (see below), whose sum is σ = 103044059328. Its totient is φ = 34348019760.

The previous prime is 64402537049. The next prime is 64402537081. The reversal of 64402537065 is 56073520446.

It is an interprime number because it is at equal distance from previous prime (64402537049) and next prime (64402537081).

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

It is not a de Polignac number, because 64402537065 - 2⁴ = 64402537049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146751221 + ... + 2146751250.

It is an arithmetic number, because the mean of its divisors is an integer number (12880507416).

Almost surely, 2^64402537065 is an apocalyptic number.

It is an amenable number.

64402537065 is a deficient number, since it is larger than the sum of its proper divisors (38641522263).

64402537065 is a wasteful number, since it uses less digits than its factorization.

64402537065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293502479.

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 64402537065 in words is "sixty-four billion, four hundred two million, five hundred thirty-seven thousand, sixty-five".