42256201644 has 36 divisors (see below), whose sum is σ = 106935335416. Its totient is φ = 14069438208.

The previous prime is 42256201633. The next prime is 42256201661. The reversal of 42256201644 is 44610265224.

42256201644 is a `hidden beast` number, since 4 + 2 + 2 + 5 + 6 + 2 + 0 + 1 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42256201599 and 42256201608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632869 + ... + 696444.

Almost surely, 2^42256201644 is an apocalyptic number.

It is an amenable number.

42256201644 is an abundant number, since it is smaller than the sum of its proper divisors (64679133772).

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

42256201644 is a wasteful number, since it uses less digits than its factorization.

42256201644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330206 (or 1330201 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 42256201644 its reverse (44610265224), we get a palindrome (86866466868).

The spelling of 42256201644 in words is "forty-two billion, two hundred fifty-six million, two hundred one thousand, six hundred forty-four".