32489099820 has 36 divisors (see below), whose sum is σ = 98550270000. Its totient is φ = 8663759904.

The previous prime is 32489099807. The next prime is 32489099827. The reversal of 32489099820 is 2899098423.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×32489099820² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32489099827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90247320 + ... + 90247679.

It is an arithmetic number, because the mean of its divisors is an integer number (2737507500).

Almost surely, 2^32489099820 is an apocalyptic number.

32489099820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32489099820 is an abundant number, since it is smaller than the sum of its proper divisors (66061170180).

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

32489099820 is a wasteful number, since it uses less digits than its factorization.

32489099820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180495014 (or 180495009 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 32489099820 in words is "thirty-two billion, four hundred eighty-nine million, ninety-nine thousand, eight hundred twenty".