42051152551 has 4 divisors (see below), whose sum is σ = 42459416272. Its totient is φ = 41642888832.

The previous prime is 42051152537. The next prime is 42051152599. The reversal of 42051152551 is 15525115024.

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 42051152551 - 2²³ = 42042763943 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 (42051155551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204131706 + ... + 204131911.

It is an arithmetic number, because the mean of its divisors is an integer number (10614854068).

Almost surely, 2^42051152551 is an apocalyptic number.

42051152551 is a deficient number, since it is larger than the sum of its proper divisors (408263721).

42051152551 is a wasteful number, since it uses less digits than its factorization.

42051152551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408263720.

The product of its (nonzero) digits is 10000, while the sum is 31.

Adding to 42051152551 its reverse (15525115024), we get a palindrome (57576267575).

The spelling of 42051152551 in words is "forty-two billion, fifty-one million, one hundred fifty-two thousand, five hundred fifty-one".