542821957822872 has 192 divisors, whose sum is σ = 1814873018300160. Its totient is φ = 142729321363200.

The previous prime is 542821957822853. The next prime is 542821957822883. The reversal of 542821957822872 is 278228759128245.

542821957822872 is a `hidden beast` number, since 5 + 4 + 2 + 8 + 21 + 9 + 578 + 2 + 28 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 542821957822872.

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, 122979754 + ... + 127317177.

It is an arithmetic number, because the mean of its divisors is an integer number (9452463636980).

Almost surely, 2^{542821957822872} is an apocalyptic number.

542821957822872 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

542821957822872 is an abundant number, since it is smaller than the sum of its proper divisors (1272051060477288).

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

542821957822872 is a wasteful number, since it uses less digits than its factorization.

542821957822872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250297294 (or 250297287 counting only the distinct ones).

The product of its digits is 722534400, while the sum is 72.

The spelling of 542821957822872 in words is "five hundred forty-two trillion, eight hundred twenty-one billion, nine hundred fifty-seven million, eight hundred twenty-two thousand, eight hundred seventy-two".