42155345651 has 8 divisors (see below), whose sum is σ = 42706358784. Its totient is φ = 41607240840.

The previous prime is 42155345647. The next prime is 42155345663. The reversal of 42155345651 is 15654355124.

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 42155345651 - 2² = 42155345647 is a prime.

It is a super-2 number, since 2×42155345651² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42155345599 and 42155345608.

It is not an unprimeable number, because it can be changed into a prime (42155345251) 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 7 ways as a sum of consecutive naturals, for example, 697895 + ... + 755888.

It is an arithmetic number, because the mean of its divisors is an integer number (5338294848).

Almost surely, 2^42155345651 is an apocalyptic number.

42155345651 is a deficient number, since it is larger than the sum of its proper divisors (551013133).

42155345651 is a wasteful number, since it uses less digits than its factorization.

42155345651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454161.

The product of its digits is 360000, while the sum is 41.

The spelling of 42155345651 in words is "forty-two billion, one hundred fifty-five million, three hundred forty-five thousand, six hundred fifty-one".