22251003642 has 32 divisors (see below), whose sum is σ = 56510486400. Its totient is φ = 6357429504.

The previous prime is 22251003601. The next prime is 22251003647. The reversal of 22251003642 is 24630015222.

It is a happy number.

22251003642 is a `hidden beast` number, since 2 + 2 + 2 + 5 + 10 + 0 + 3 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22251003647) 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, 29432167 + ... + 29432922.

It is an arithmetic number, because the mean of its divisors is an integer number (1765952700).

Almost surely, 2^22251003642 is an apocalyptic number.

22251003642 is an abundant number, since it is smaller than the sum of its proper divisors (34259482758).

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

22251003642 is a wasteful number, since it uses less digits than its factorization.

22251003642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58865107 (or 58865101 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 22251003642 its reverse (24630015222), we get a palindrome (46881018864).

The spelling of 22251003642 in words is "twenty-two billion, two hundred fifty-one million, three thousand, six hundred forty-two".