3551650503856 has 320 divisors, whose sum is σ = 8780238028800. Its totient is φ = 1382768271360.

The previous prime is 3551650503839. The next prime is 3551650503889. The reversal of 3551650503856 is 6583050561553.

It is a happy number.

It is a super-2 number, since 2×3551650503856² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 1321788945 + ... + 1321791631.

It is an arithmetic number, because the mean of its divisors is an integer number (27438243840).

Almost surely, 2^{3551650503856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551650503856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4390119014400).

3551650503856 is an abundant number, since it is smaller than the sum of its proper divisors (5228587524944).

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

3551650503856 is a wasteful number, since it uses less digits than its factorization.

3551650503856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017 (or 2997 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 52.

The spelling of 3551650503856 in words is "three trillion, five hundred fifty-one billion, six hundred fifty million, five hundred three thousand, eight hundred fifty-six".