64273333340 has 12 divisors (see below), whose sum is σ = 134974000056. Its totient is φ = 25709333328.

The previous prime is 64273333339. The next prime is 64273333349. The reversal of 64273333340 is 4333337246.

It is a super-2 number, since 2×64273333340² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64273333294 and 64273333303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64273333349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606833314 + ... + 1606833353.

It is an arithmetic number, because the mean of its divisors is an integer number (11247833338).

Almost surely, 2^64273333340 is an apocalyptic number.

It is an amenable number.

64273333340 is an abundant number, since it is smaller than the sum of its proper divisors (70700666716).

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

64273333340 is a wasteful number, since it uses less digits than its factorization.

64273333340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213666676 (or 3213666674 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 38.

The spelling of 64273333340 in words is "sixty-four billion, two hundred seventy-three million, three hundred thirty-three thousand, three hundred forty".