637353227442 has 32 divisors (see below), whose sum is σ = 1320971446080. Its totient is φ = 204765906240.

The previous prime is 637353227387. The next prime is 637353227477. The reversal of 637353227442 is 244722353736.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 637353227391 and 637353227400.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3108133 + ... + 3306840.

It is an arithmetic number, because the mean of its divisors is an integer number (41280357690).

Almost surely, 2^637353227442 is an apocalyptic number.

637353227442 is an abundant number, since it is smaller than the sum of its proper divisors (683618218638).

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

637353227442 is a wasteful number, since it uses less digits than its factorization.

637353227442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415578.

The product of its digits is 5080320, while the sum is 48.

The spelling of 637353227442 in words is "six hundred thirty-seven billion, three hundred fifty-three million, two hundred twenty-seven thousand, four hundred forty-two".