542991987986 has 16 divisors (see below), whose sum is σ = 930853100736. Its totient is φ = 232708428816.

The previous prime is 542991987973. The next prime is 542991987991. The reversal of 542991987986 is 689789199245.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079020 + ... + 2325576.

It is an arithmetic number, because the mean of its divisors is an integer number (58178318796).

Almost surely, 2^542991987986 is an apocalyptic number.

542991987986 is a deficient number, since it is larger than the sum of its proper divisors (387861112750).

542991987986 is a wasteful number, since it uses less digits than its factorization.

542991987986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403873.

The product of its digits is 705438720, while the sum is 77.

The spelling of 542991987986 in words is "five hundred forty-two billion, nine hundred ninety-one million, nine hundred eighty-seven thousand, nine hundred eighty-six".