3531472208640 has 216 divisors, whose sum is σ = 12220347052368. Its totient is φ = 941585571840.

The previous prime is 3531472208573. The next prime is 3531472208651. The reversal of 3531472208640 is 468022741353.

3531472208640 is a `hidden beast` number, since 3 + 5 + 314 + 72 + 208 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94111162 + ... + 94148678.

It is an arithmetic number, because the mean of its divisors is an integer number (56575680798).

Almost surely, 2^{3531472208640} is an apocalyptic number.

3531472208640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3531472208640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6110173526184).

3531472208640 is an abundant number, since it is smaller than the sum of its proper divisors (8688874843728).

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

3531472208640 is a wasteful number, since it uses less digits than its factorization.

3531472208640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45715 (or 45698 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

Adding to 3531472208640 its reverse (468022741353), we get a palindrome (3999494949993).

The spelling of 3531472208640 in words is "three trillion, five hundred thirty-one billion, four hundred seventy-two million, two hundred eight thousand, six hundred forty".