3551021105537 has 16 divisors (see below), whose sum is σ = 3580894656000. Its totient is φ = 3521231688000.

The previous prime is 3551021105491. The next prime is 3551021105539. The reversal of 3551021105537 is 7355011201553.

It is a cyclic number.

It is not a de Polignac number, because 3551021105537 - 2²⁸ = 3550752670081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3551021105537.

It is not an unprimeable number, because it can be changed into a prime (3551021105539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555799139 + ... + 555805527.

It is an arithmetic number, because the mean of its divisors is an integer number (223805916000).

Almost surely, 2^{3551021105537} is an apocalyptic number.

It is an amenable number.

3551021105537 is a deficient number, since it is larger than the sum of its proper divisors (29873550463).

3551021105537 is a wasteful number, since it uses less digits than its factorization.

3551021105537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 78750, while the sum is 38.

The spelling of 3551021105537 in words is "three trillion, five hundred fifty-one billion, twenty-one million, one hundred five thousand, five hundred thirty-seven".