64511452464 has 80 divisors (see below), whose sum is σ = 167312148480. Its totient is φ = 21419146240.

The previous prime is 64511452463. The next prime is 64511452469. The reversal of 64511452464 is 46425411546.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64511452463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14872504 + ... + 14876840.

It is an arithmetic number, because the mean of its divisors is an integer number (2091401856).

Almost surely, 2^64511452464 is an apocalyptic number.

It is an amenable number.

64511452464 is an abundant number, since it is smaller than the sum of its proper divisors (102800696016).

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

64511452464 is a wasteful number, since it uses less digits than its factorization.

64511452464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5492 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The spelling of 64511452464 in words is "sixty-four billion, five hundred eleven million, four hundred fifty-two thousand, four hundred sixty-four".