42111612551 has 8 divisors (see below), whose sum is σ = 42237959904. Its totient is φ = 41985440640.

The previous prime is 42111612547. The next prime is 42111612563. The reversal of 42111612551 is 15521611124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42111612551 - 2² = 42111612547 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 (42111612581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445046 + ... + 531308.

It is an arithmetic number, because the mean of its divisors is an integer number (5279744988).

Almost surely, 2^42111612551 is an apocalyptic number.

42111612551 is a deficient number, since it is larger than the sum of its proper divisors (126347353).

42111612551 is an equidigital number, since it uses as much as digits as its factorization.

42111612551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87721.

The product of its digits is 2400, while the sum is 29.

The spelling of 42111612551 in words is "forty-two billion, one hundred eleven million, six hundred twelve thousand, five hundred fifty-one".