3551145642 has 96 divisors (see below), whose sum is σ = 8751188160. Its totient is φ = 1030848000.

The previous prime is 3551145641. The next prime is 3551145659. The reversal of 3551145642 is 2465411553.

3551145642 is a `hidden beast` number, since 3 + 5 + 5 + 1 + 1 + 4 + 5 + 642 = 666.

It is a super-2 number, since 2×3551145642² = 25221270741391184328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551145597 and 3551145606.

It is not an unprimeable number, because it can be changed into a prime (3551145641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 749842 + ... + 754562.

It is an arithmetic number, because the mean of its divisors is an integer number (91158210).

Almost surely, 2^3551145642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551145642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4375594080).

3551145642 is an abundant number, since it is smaller than the sum of its proper divisors (5200042518).

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

3551145642 is a wasteful number, since it uses less digits than its factorization.

3551145642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900 (or 4897 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 3551145642 is about 59591.4896776377. The cubic root of 3551145642 is about 1525.6543843223.

The spelling of 3551145642 in words is "three billion, five hundred fifty-one million, one hundred forty-five thousand, six hundred forty-two".