1642614427231 has 16 divisors (see below), whose sum is σ = 1700009419680. Its totient is φ = 1586098483200.

The previous prime is 1642614427189. The next prime is 1642614427243. The reversal of 1642614427231 is 1327244162461.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642614427231 is a prime.

It is a super-2 number, since 2×1642614427231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642614427031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22746081 + ... + 22818181.

It is an arithmetic number, because the mean of its divisors is an integer number (106250588730).

Almost surely, 2^{1642614427231} is an apocalyptic number.

1642614427231 is a deficient number, since it is larger than the sum of its proper divisors (57394992449).

1642614427231 is an equidigital number, since it uses as much as digits as its factorization.

1642614427231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78186.

The product of its digits is 387072, while the sum is 43.

Adding to 1642614427231 its reverse (1327244162461), we get a palindrome (2969858589692).

The spelling of 1642614427231 in words is "one trillion, six hundred forty-two billion, six hundred fourteen million, four hundred twenty-seven thousand, two hundred thirty-one".