32012077818 has 64 divisors (see below), whose sum is σ = 75060513792. Its totient is φ = 8911123200.

The previous prime is 32012077813. The next prime is 32012077847. The reversal of 32012077818 is 81877021023.

It is a super-2 number, since 2×32012077818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32012077813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 702105 + ... + 746307.

It is an arithmetic number, because the mean of its divisors is an integer number (1172820528).

Almost surely, 2^32012077818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32012077818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37530256896).

32012077818 is an abundant number, since it is smaller than the sum of its proper divisors (43048435974).

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

32012077818 is a wasteful number, since it uses less digits than its factorization.

32012077818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44659.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 32012077818 in words is "thirty-two billion, twelve million, seventy-seven thousand, eight hundred eighteen".