64499614354080 has 144 divisors (see below), whose sum is σ = 220427199326880. Its totient is φ = 17174714033664.

The previous prime is 64499614353997. The next prime is 64499614354081. The reversal of 64499614354080 is 8045341699446.

It is a happy number.

64499614354080 is a `hidden beast` number, since 6 + 4 + 4 + 9 + 9 + 6 + 1 + 4 + 3 + 540 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×64499614354080² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64499614353999 and 64499614354017.

It is not an unprimeable number, because it can be changed into a prime (64499614354081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31806670 + ... + 33773709.

It is an arithmetic number, because the mean of its divisors is an integer number (1530744439770).

Almost surely, 2^{64499614354080} is an apocalyptic number.

64499614354080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64499614354080 is an abundant number, since it is smaller than the sum of its proper divisors (155927584972800).

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

64499614354080 is a wasteful number, since it uses less digits than its factorization.

64499614354080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65581083 (or 65581072 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 63.

The spelling of 64499614354080 in words is "sixty-four trillion, four hundred ninety-nine billion, six hundred fourteen million, three hundred fifty-four thousand, eighty".