3557257888240 has 120 divisors (see below), whose sum is σ = 9624856661712. Its totient is φ = 1219133583360.

The previous prime is 3557257888213. The next prime is 3557257888241. The reversal of 3557257888240 is 428887527553.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3557257888241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9486720 + ... + 9854560.

Almost surely, 2^{3557257888240} 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 3557257888240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4812428330856).

3557257888240 is an abundant number, since it is smaller than the sum of its proper divisors (6067598773472).

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

3557257888240 is a wasteful number, since it uses less digits than its factorization.

3557257888240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370335 (or 370322 counting only the distinct ones).

The product of its (nonzero) digits is 150528000, while the sum is 64.

The spelling of 3557257888240 in words is "three trillion, five hundred fifty-seven billion, two hundred fifty-seven million, eight hundred eighty-eight thousand, two hundred forty".