32557449990 has 64 divisors (see below), whose sum is σ = 84981742272. Its totient is φ = 7934784000.

The previous prime is 32557449961. The next prime is 32557450031. The reversal of 32557449990 is 9994475523.

It is a self number, because there is not a number n which added to its sum of digits gives 32557449990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373881 + ... + 452660.

It is an arithmetic number, because the mean of its divisors is an integer number (1327839723).

Almost surely, 2^32557449990 is an apocalyptic number.

32557449990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

32557449990 is an abundant number, since it is smaller than the sum of its proper divisors (52424292282).

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

32557449990 is a wasteful number, since it uses less digits than its factorization.

32557449990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826665.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 32557449990 in words is "thirty-two billion, five hundred fifty-seven million, four hundred forty-nine thousand, nine hundred ninety".