40640260272 has 80 divisors (see below), whose sum is σ = 106549251840. Its totient is φ = 13345516800.

The previous prime is 40640260267. The next prime is 40640260279. The reversal of 40640260272 is 27206204604.

It is not an unprimeable number, because it can be changed into a prime (40640260279) 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, 5213754 + ... + 5221542.

It is an arithmetic number, because the mean of its divisors is an integer number (1331865648).

Almost surely, 2^40640260272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40640260272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53274625920).

40640260272 is an abundant number, since it is smaller than the sum of its proper divisors (65908991568).

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

40640260272 is a wasteful number, since it uses less digits than its factorization.

40640260272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402 (or 9396 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 40640260272 its reverse (27206204604), we get a palindrome (67846464876).

The spelling of 40640260272 in words is "forty billion, six hundred forty million, two hundred sixty thousand, two hundred seventy-two".