3520351563861 has 16 divisors (see below), whose sum is σ = 5136870841920. Its totient is φ = 2126729953920.

The previous prime is 3520351563851. The next prime is 3520351563889. The reversal of 3520351563861 is 1683651530253.

It is not a de Polignac number, because 3520351563861 - 2⁶ = 3520351563797 is a prime.

It is a super-2 number, since 2×3520351563861² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3520351563861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520351563851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170400726 + ... + 170421383.

It is an arithmetic number, because the mean of its divisors is an integer number (321054427620).

Almost surely, 2^{3520351563861} is an apocalyptic number.

It is an amenable number.

3520351563861 is a deficient number, since it is larger than the sum of its proper divisors (1616519278059).

3520351563861 is a wasteful number, since it uses less digits than its factorization.

3520351563861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340822436.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 3520351563861 in words is "three trillion, five hundred twenty billion, three hundred fifty-one million, five hundred sixty-three thousand, eight hundred sixty-one".