42445372550 has 48 divisors (see below), whose sum is σ = 90243485952. Its totient is φ = 14549997600.

The previous prime is 42445372537. The next prime is 42445372559. The reversal of 42445372550 is 5527354424.

It is a junction number, because it is equal to n+sod(n) for n = 42445372498 and 42445372507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42445372559) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3116255 + ... + 3129845.

It is an arithmetic number, because the mean of its divisors is an integer number (1880072624).

Almost surely, 2^42445372550 is an apocalyptic number.

42445372550 is an abundant number, since it is smaller than the sum of its proper divisors (47798113402).

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

42445372550 is a wasteful number, since it uses less digits than its factorization.

42445372550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22533 (or 22528 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 41.

The spelling of 42445372550 in words is "forty-two billion, four hundred forty-five million, three hundred seventy-two thousand, five hundred fifty".