64506036260 has 96 divisors (see below), whose sum is σ = 144008807040. Its totient is φ = 24202533888.

The previous prime is 64506036247. The next prime is 64506036263. The reversal of 64506036260 is 6263060546.

It is a super-2 number, since 2×64506036260² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (64506036263) 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, 23061182 + ... + 23063978.

It is an arithmetic number, because the mean of its divisors is an integer number (1500091740).

Almost surely, 2^64506036260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64506036260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72004403520).

64506036260 is an abundant number, since it is smaller than the sum of its proper divisors (79502770780).

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

64506036260 is a wasteful number, since it uses less digits than its factorization.

64506036260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405 (or 3403 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 64506036260 in words is "sixty-four billion, five hundred six million, thirty-six thousand, two hundred sixty".