542220512637 has 4 divisors (see below), whose sum is σ = 722960683520. Its totient is φ = 361480341756.

The previous prime is 542220512579. The next prime is 542220512681. The reversal of 542220512637 is 736215022245.

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 not a de Polignac number, because 542220512637 - 2¹⁶ = 542220447101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542220512595 and 542220512604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542220516637) 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, 90370085437 + ... + 90370085442.

It is an arithmetic number, because the mean of its divisors is an integer number (180740170880).

Almost surely, 2^542220512637 is an apocalyptic number.

It is an amenable number.

542220512637 is a deficient number, since it is larger than the sum of its proper divisors (180740170883).

542220512637 is a wasteful number, since it uses less digits than its factorization.

542220512637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180740170882.

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 542220512637 in words is "five hundred forty-two billion, two hundred twenty million, five hundred twelve thousand, six hundred thirty-seven".