6642626442 has 16 divisors (see below), whose sum is σ = 13984476960. Its totient is φ = 2097671472.

The previous prime is 6642626399. The next prime is 6642626467. The reversal of 6642626442 is 2446262466.

It is a junction number, because it is equal to n+sod(n) for n = 6642626394 and 6642626403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29134213 + ... + 29134440.

It is an arithmetic number, because the mean of its divisors is an integer number (874029810).

Almost surely, 2^6642626442 is an apocalyptic number.

6642626442 is an abundant number, since it is smaller than the sum of its proper divisors (7341850518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6642626442 is a wasteful number, since it uses less digits than its factorization.

6642626442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58268677.

The product of its digits is 663552, while the sum is 42.

The square root of 6642626442 is about 81502.3094274021. The cubic root of 6642626442 is about 1879.8070612698.

The spelling of 6642626442 in words is "six billion, six hundred forty-two million, six hundred twenty-six thousand, four hundred forty-two".