64236289965 has 32 divisors (see below), whose sum is σ = 105590338560. Its totient is φ = 33322535424.

The previous prime is 64236289937. The next prime is 64236289967. The reversal of 64236289965 is 56998263246.

It is a happy number.

It is not a de Polignac number, because 64236289965 - 2¹⁷ = 64236158893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64236289899 and 64236289908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64236289967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1847017 + ... + 1881473.

It is an arithmetic number, because the mean of its divisors is an integer number (3299698080).

Almost surely, 2^64236289965 is an apocalyptic number.

It is an amenable number.

64236289965 is a deficient number, since it is larger than the sum of its proper divisors (41354048595).

64236289965 is a wasteful number, since it uses less digits than its factorization.

64236289965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37861.

The product of its digits is 33592320, while the sum is 60.

The spelling of 64236289965 in words is "sixty-four billion, two hundred thirty-six million, two hundred eighty-nine thousand, nine hundred sixty-five".