64265231040 has 224 divisors, whose sum is σ = 213214671360. Its totient is φ = 16369115136.

The previous prime is 64265231033. The next prime is 64265231047. The reversal of 64265231040 is 4013256246.

It is an interprime number because it is at equal distance from previous prime (64265231033) and next prime (64265231047).

It is a junction number, because it is equal to n+sod(n) for n = 64265230992 and 64265231010.

It is not an unprimeable number, because it can be changed into a prime (64265231047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20024956 + ... + 20028164.

Almost surely, 2^64265231040 is an apocalyptic number.

64265231040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64265231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106607335680).

64265231040 is an abundant number, since it is smaller than the sum of its proper divisors (148949440320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64265231040 is a wasteful number, since it uses less digits than its factorization.

64265231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159 (or 4149 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 64265231040 its reverse (4013256246), we get a palindrome (68278487286).

It can be divided in two parts, 6426 and 5231040, that added together give a triangular number (5237466 = T₃₂₃₆).

The spelling of 64265231040 in words is "sixty-four billion, two hundred sixty-five million, two hundred thirty-one thousand, forty".