542555543640 has 512 divisors, whose sum is σ = 1851085716480. Its totient is φ = 126074880000.

The previous prime is 542555543591. The next prime is 542555543659. The reversal of 542555543640 is 46345555245.

It is a self number, because there is not a number n which added to its sum of digits gives 542555543640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 950184555 + ... + 950185125.

It is an arithmetic number, because the mean of its divisors is an integer number (3615401790).

Almost surely, 2^542555543640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542555543640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925542858240).

542555543640 is an abundant number, since it is smaller than the sum of its proper divisors (1308530172840).

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

542555543640 is a wasteful number, since it uses less digits than its factorization.

542555543640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 48.

The spelling of 542555543640 in words is "five hundred forty-two billion, five hundred fifty-five million, five hundred forty-three thousand, six hundred forty".