920040632436720 has 480 divisors, whose sum is σ = 3215411388124992. Its totient is φ = 216822928637952.

The previous prime is 920040632436659. The next prime is 920040632436721. The reversal of 920040632436720 is 27634236040029.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 920040632436720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920040632436721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 163671484 + ... + 169199396.

Almost surely, 2^{920040632436720} 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 920040632436720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607705694062496).

920040632436720 is an abundant number, since it is smaller than the sum of its proper divisors (2295370755688272).

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

920040632436720 is a wasteful number, since it uses less digits than its factorization.

920040632436720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528097 (or 5528072 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 48.

Adding to 920040632436720 its reverse (27634236040029), we get a palindrome (947674868476749).

The spelling of 920040632436720 in words is "nine hundred twenty trillion, forty billion, six hundred thirty-two million, four hundred thirty-six thousand, seven hundred twenty".