542449955138 has 32 divisors (see below), whose sum is σ = 1002823820544. Its totient is φ = 214300354752.

The previous prime is 542449955087. The next prime is 542449955149. The reversal of 542449955138 is 831559944245.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1917545 + ... + 2182172.

It is an arithmetic number, because the mean of its divisors is an integer number (31338244392).

Almost surely, 2^542449955138 is an apocalyptic number.

542449955138 is a deficient number, since it is larger than the sum of its proper divisors (460373865406).

542449955138 is a wasteful number, since it uses less digits than its factorization.

542449955138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100466.

The product of its digits is 31104000, while the sum is 59.

The spelling of 542449955138 in words is "five hundred forty-two billion, four hundred forty-nine million, nine hundred fifty-five thousand, one hundred thirty-eight".