3551432455856 has 20 divisors (see below), whose sum is σ = 6880929600504. Its totient is φ = 1775708688000.

The previous prime is 3551432455847. The next prime is 3551432455859. The reversal of 3551432455856 is 6585542341553.

It is a happy number.

It is a super-2 number, since 2×3551432455856² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3551432455859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132631 + ... + 7614281.

Almost surely, 2^{3551432455856} is an apocalyptic number.

It is an amenable number.

3551432455856 is a deficient number, since it is larger than the sum of its proper divisors (3329497144648).

3551432455856 is a wasteful number, since it uses less digits than its factorization.

3551432455856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942500 (or 942494 counting only the distinct ones).

The product of its digits is 43200000, while the sum is 56.

The spelling of 3551432455856 in words is "three trillion, five hundred fifty-one billion, four hundred thirty-two million, four hundred fifty-five thousand, eight hundred fifty-six".