64454855845446 has 96 divisors (see below), whose sum is σ = 156530777483808. Its totient is φ = 18995942085120.

The previous prime is 64454855845423. The next prime is 64454855845607.

64454855845446 is a `hidden beast` number, since 6 + 4 + 4 + 5 + 4 + 85 + 58 + 454 + 46 = 666.

64454855845446 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15692820 + ... + 19369416.

It is an arithmetic number, because the mean of its divisors is an integer number (1630528932123).

Almost surely, 2^{64454855845446} is an apocalyptic number.

64454855845446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64454855845446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78265388741904).

64454855845446 is an abundant number, since it is smaller than the sum of its proper divisors (92075921638362).

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

64454855845446 is a wasteful number, since it uses less digits than its factorization.

64454855845446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679046 (or 3679043 counting only the distinct ones).

The product of its digits is 5898240000, while the sum is 72.

The spelling of 64454855845446 in words is "sixty-four trillion, four hundred fifty-four billion, eight hundred fifty-five million, eight hundred forty-five thousand, four hundred forty-six".