3521691954356 has 96 divisors (see below), whose sum is σ = 6832385387520. Its totient is φ = 1582087852800.

The previous prime is 3521691954353. The next prime is 3521691954377. The reversal of 3521691954356 is 6534591961253.

It is a junction number, because it is equal to n+sod(n) for n = 3521691954295 and 3521691954304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521691954353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28209185 + ... + 28333751.

It is an arithmetic number, because the mean of its divisors is an integer number (71170681120).

Almost surely, 2^{3521691954356} is an apocalyptic number.

It is an amenable number.

3521691954356 is a deficient number, since it is larger than the sum of its proper divisors (3310693433164).

3521691954356 is a wasteful number, since it uses less digits than its factorization.

3521691954356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124885 (or 124883 counting only the distinct ones).

The product of its digits is 26244000, while the sum is 59.

The spelling of 3521691954356 in words is "three trillion, five hundred twenty-one billion, six hundred ninety-one million, nine hundred fifty-four thousand, three hundred fifty-six".