42885554456640 has 448 divisors, whose sum is σ = 165226140057600. Its totient is φ = 9200092545024.

The previous prime is 42885554456629. The next prime is 42885554456659. The reversal of 42885554456640 is 4665445558824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40489321 + ... + 41534999.

Almost surely, 2^{42885554456640} is an apocalyptic number.

42885554456640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42885554456640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82613070028800).

42885554456640 is an abundant number, since it is smaller than the sum of its proper divisors (122340585600960).

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

42885554456640 is a wasteful number, since it uses less digits than its factorization.

42885554456640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046082 (or 1046072 counting only the distinct ones).

The product of its (nonzero) digits is 737280000, while the sum is 66.

The spelling of 42885554456640 in words is "forty-two trillion, eight hundred eighty-five billion, five hundred fifty-four million, four hundred fifty-six thousand, six hundred forty".