542044012651 has 4 divisors (see below), whose sum is σ = 553576864032. Its totient is φ = 530511161272.

The previous prime is 542044012639. The next prime is 542044012669. The reversal of 542044012651 is 156210440245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542044012651 - 2⁵ = 542044012619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542042012651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5766425620 + ... + 5766425713.

It is an arithmetic number, because the mean of its divisors is an integer number (138394216008).

Almost surely, 2^542044012651 is an apocalyptic number.

542044012651 is a deficient number, since it is larger than the sum of its proper divisors (11532851381).

542044012651 is a wasteful number, since it uses less digits than its factorization.

542044012651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532851380.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 542044012651 its reverse (156210440245), we get a palindrome (698254452896).

The spelling of 542044012651 in words is "five hundred forty-two billion, forty-four million, twelve thousand, six hundred fifty-one".