542044651633 has 4 divisors (see below), whose sum is σ = 559529963008. Its totient is φ = 524559340260.

The previous prime is 542044651579. The next prime is 542044651649. The reversal of 542044651633 is 336156440245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542044651633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542044651633.

It is not an unprimeable number, because it can be changed into a prime (542044651033) 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, 8742655641 + ... + 8742655702.

It is an arithmetic number, because the mean of its divisors is an integer number (139882490752).

Almost surely, 2^542044651633 is an apocalyptic number.

It is an amenable number.

542044651633 is a deficient number, since it is larger than the sum of its proper divisors (17485311375).

542044651633 is a wasteful number, since it uses less digits than its factorization.

542044651633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17485311374.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 542044651633 in words is "five hundred forty-two billion, forty-four million, six hundred fifty-one thousand, six hundred thirty-three".