3551488636642 has 16 divisors (see below), whose sum is σ = 5332257230040. Its totient is φ = 1774069742592.

The previous prime is 3551488636543. The next prime is 3551488636679. The reversal of 3551488636642 is 2466368841553.

It can be written as a sum of positive squares in 4 ways, for example, as 2390613837921 + 1160874798721 = 1546161^2 + 1077439^2 .

It is a super-2 number, since 2×3551488636642² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53330038 + ... + 53396590.

Almost surely, 2^{3551488636642} is an apocalyptic number.

3551488636642 is a deficient number, since it is larger than the sum of its proper divisors (1780768593398).

3551488636642 is a wasteful number, since it uses less digits than its factorization.

3551488636642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91317.

The product of its digits is 99532800, while the sum is 61.

The spelling of 3551488636642 in words is "three trillion, five hundred fifty-one billion, four hundred eighty-eight million, six hundred thirty-six thousand, six hundred forty-two".