42215002543551 has 4 divisors (see below), whose sum is σ = 56286670058072. Its totient is φ = 28143335029032.

The previous prime is 42215002543501. The next prime is 42215002543601. The reversal of 42215002543551 is 15534520051224.

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

It is an interprime number because it is at equal distance from previous prime (42215002543501) and next prime (42215002543601).

It is not a de Polignac number, because 42215002543551 - 2⁷ = 42215002543423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42215002543501) 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, 7035833757256 + ... + 7035833757261.

It is an arithmetic number, because the mean of its divisors is an integer number (14071667514518).

Almost surely, 2^{42215002543551} is an apocalyptic number.

42215002543551 is a deficient number, since it is larger than the sum of its proper divisors (14071667514521).

42215002543551 is a wasteful number, since it uses less digits than its factorization.

42215002543551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14071667514520.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 42215002543551 its reverse (15534520051224), we get a palindrome (57749522594775).

The spelling of 42215002543551 in words is "forty-two trillion, two hundred fifteen billion, two million, five hundred forty-three thousand, five hundred fifty-one".