64454567752 has 16 divisors (see below), whose sum is σ = 120990129660. Its totient is φ = 32190533184.

The previous prime is 64454567747. The next prime is 64454567761. The reversal of 64454567752 is 25776545446.

It can be written as a sum of positive squares in 2 ways, for example, as 63355910436 + 1098657316 = 251706^2 + 33146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64454567693 and 64454567702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586383 + ... + 4600414.

Almost surely, 2^64454567752 is an apocalyptic number.

It is an amenable number.

64454567752 is a deficient number, since it is larger than the sum of its proper divisors (56535561908).

64454567752 is a wasteful number, since it uses less digits than its factorization.

64454567752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9187680 (or 9187676 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 55.

The spelling of 64454567752 in words is "sixty-four billion, four hundred fifty-four million, five hundred sixty-seven thousand, seven hundred fifty-two".