901655430240 has 768 divisors, whose sum is σ = 3380880384000. Its totient is φ = 200286535680.

The previous prime is 901655430191. The next prime is 901655430241. The reversal of 901655430240 is 42034556109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901655430241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 139377726 + ... + 139384194.

It is an arithmetic number, because the mean of its divisors is an integer number (4402188000).

Almost surely, 2^901655430240 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 901655430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690440192000).

901655430240 is an abundant number, since it is smaller than the sum of its proper divisors (2479224953760).

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

901655430240 is a wasteful number, since it uses less digits than its factorization.

901655430240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583 (or 6575 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 901655430240 its reverse (42034556109), we get a palindrome (943689986349).

The spelling of 901655430240 in words is "nine hundred one billion, six hundred fifty-five million, four hundred thirty thousand, two hundred forty".