3551900661120 has 512 divisors, whose sum is σ = 13155374177280. Its totient is φ = 798357454848.

The previous prime is 3551900660993. The next prime is 3551900661137. The reversal of 3551900661120 is 211660091553.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 340443424 + ... + 340453856.

It is an arithmetic number, because the mean of its divisors is an integer number (25694090190).

Almost surely, 2^{3551900661120} is an apocalyptic number.

3551900661120 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 3551900661120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6577687088640).

3551900661120 is an abundant number, since it is smaller than the sum of its proper divisors (9603473516160).

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

3551900661120 is a wasteful number, since it uses less digits than its factorization.

3551900661120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10882 (or 10870 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 3551900661120 in words is "three trillion, five hundred fifty-one billion, nine hundred million, six hundred sixty-one thousand, one hundred twenty".