3551641040 has 40 divisors (see below), whose sum is σ = 8260168488. Its totient is φ = 1420208640.

The previous prime is 3551641039. The next prime is 3551641043. The reversal of 3551641040 is 401461553.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1582766656 + 1968874384 = 39784^2 + 44372^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3551641040² = 25228308154024563200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551640994 and 3551641012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551641043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384314 + ... + 393446.

Almost surely, 2^3551641040 is an apocalyptic number.

It is an amenable number.

3551641040 is an abundant number, since it is smaller than the sum of its proper divisors (4708527448).

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

3551641040 is a wasteful number, since it uses less digits than its factorization.

3551641040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007 (or 14001 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 3551641040 is about 59595.6461496979. The cubic root of 3551641040 is about 1525.7253258403.

The spelling of 3551641040 in words is "three billion, five hundred fifty-one million, six hundred forty-one thousand, forty".