64236146240 has 84 divisors (see below), whose sum is σ = 177935807196. Its totient is φ = 22023816192.

The previous prime is 64236146209. The next prime is 64236146269. The reversal of 64236146240 is 4264163246.

64236146240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44147052544 + 20089093696 = 210112^2 + 141736^2 .

It is a super-2 number, since 2×64236146240² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64236146194 and 64236146203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2032667 + ... + 2064026.

It is an arithmetic number, because the mean of its divisors is an integer number (2118283419).

Almost surely, 2^64236146240 is an apocalyptic number.

It is an amenable number.

64236146240 is an abundant number, since it is smaller than the sum of its proper divisors (113699660956).

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

64236146240 is a wasteful number, since it uses less digits than its factorization.

64236146240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096724 (or 4096707 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 64236146240 in words is "sixty-four billion, two hundred thirty-six million, one hundred forty-six thousand, two hundred forty".