542740081367720 has 16 divisors (see below), whose sum is σ = 1221165183077460. Its totient is φ = 217096032547072.

The previous prime is 542740081367713. The next prime is 542740081367747. The reversal of 542740081367720 is 27763180047245.

It can be written as a sum of positive squares in 2 ways, for example, as 540930749694724 + 1809331672996 = 23257918^2 + 1345114^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6784251017057 + ... + 6784251017136.

Almost surely, 2^{542740081367720} is an apocalyptic number.

It is an amenable number.

542740081367720 is an abundant number, since it is smaller than the sum of its proper divisors (678425101709740).

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

542740081367720 is a wasteful number, since it uses less digits than its factorization.

542740081367720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13568502034204 (or 13568502034200 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 542740081367720 in words is "five hundred forty-two trillion, seven hundred forty billion, eighty-one million, three hundred sixty-seven thousand, seven hundred twenty".