89642217540 has 48 divisors (see below), whose sum is σ = 265762812672. Its totient is φ = 22498438656.

The previous prime is 89642217517. The next prime is 89642217541. The reversal of 89642217540 is 4571224698.

It is a self number, because there is not a number n which added to its sum of digits gives 89642217540.

It is not an unprimeable number, because it can be changed into a prime (89642217541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43941244 + ... + 43943283.

It is an arithmetic number, because the mean of its divisors is an integer number (5536725264).

Almost surely, 2^89642217540 is an apocalyptic number.

It is an amenable number.

89642217540 is an abundant number, since it is smaller than the sum of its proper divisors (176120595132).

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

89642217540 is a wasteful number, since it uses less digits than its factorization.

89642217540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87884556 (or 87884554 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 89642217540 in words is "eighty-nine billion, six hundred forty-two million, two hundred seventeen thousand, five hundred forty".