32678135581 has 24 divisors (see below), whose sum is σ = 40811400960. Its totient is φ = 25617923136.

The previous prime is 32678135579. The next prime is 32678135603. The reversal of 32678135581 is 18553187623.

It is not a de Polignac number, because 32678135581 - 2¹ = 32678135579 is a prime.

It is a super-2 number, since 2×32678135581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32678135531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2236 + ... + 255658.

It is an arithmetic number, because the mean of its divisors is an integer number (1700475040).

Almost surely, 2^32678135581 is an apocalyptic number.

It is an amenable number.

32678135581 is a deficient number, since it is larger than the sum of its proper divisors (8133265379).

32678135581 is a wasteful number, since it uses less digits than its factorization.

32678135581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253565 (or 253552 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 32678135581 in words is "thirty-two billion, six hundred seventy-eight million, one hundred thirty-five thousand, five hundred eighty-one".