40220640000660 has 96 divisors (see below), whose sum is σ = 128721405173760. Its totient is φ = 9192192202368.

The previous prime is 40220640000631. The next prime is 40220640000757. The reversal of 40220640000660 is 6600004602204.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2186500 + ... + 9231579.

It is an arithmetic number, because the mean of its divisors is an integer number (1340847970560).

Almost surely, 2^{40220640000660} is an apocalyptic number.

It is an amenable number.

40220640000660 is an abundant number, since it is smaller than the sum of its proper divisors (88500765173100).

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

40220640000660 is a wasteful number, since it uses less digits than its factorization.

40220640000660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11426485 (or 11426483 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 40220640000660 its reverse (6600004602204), we get a palindrome (46820644602864).

The spelling of 40220640000660 in words is "forty trillion, two hundred twenty billion, six hundred forty million, six hundred sixty", and thus it is an aban number.