64484582551800 has 48 divisors (see below), whose sum is σ = 199902205912440. Its totient is φ = 17195888680320.

The previous prime is 64484582551769. The next prime is 64484582551811. The reversal of 64484582551800 is 815528548446.

It is a happy number.

It is a super-2 number, since 2×64484582551800² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 53737151527 + ... + 53737152726.

Almost surely, 2^{64484582551800} is an apocalyptic number.

64484582551800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64484582551800 is an abundant number, since it is smaller than the sum of its proper divisors (135417623360640).

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

64484582551800 is a wasteful number, since it uses less digits than its factorization.

64484582551800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107474304272 (or 107474304263 counting only the distinct ones).

The product of its (nonzero) digits is 49152000, while the sum is 60.

The spelling of 64484582551800 in words is "sixty-four trillion, four hundred eighty-four billion, five hundred eighty-two million, five hundred fifty-one thousand, eight hundred".