52445641990 has 16 divisors (see below), whose sum is σ = 107888177952. Its totient is φ = 17981362944.

The previous prime is 52445641967. The next prime is 52445641991. The reversal of 52445641990 is 9914654425.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52445641991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374611659 + ... + 374611798.

It is an arithmetic number, because the mean of its divisors is an integer number (6743011122).

Almost surely, 2^52445641990 is an apocalyptic number.

52445641990 is an abundant number, since it is smaller than the sum of its proper divisors (55442535962).

52445641990 is a wasteful number, since it uses less digits than its factorization.

52445641990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749223471.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 52445641990 in words is "fifty-two billion, four hundred forty-five million, six hundred forty-one thousand, nine hundred ninety".