5643621254002 has 4 divisors (see below), whose sum is σ = 8465431881006. Its totient is φ = 2821810627000.

The previous prime is 5643621253999. The next prime is 5643621254003. The reversal of 5643621254002 is 2004521263465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3737374366441 + 1906246887561 = 1933229^2 + 1380669^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5643621254003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410905313499 + ... + 1410905313502.

Almost surely, 2^{5643621254002} is an apocalyptic number.

5643621254002 is a deficient number, since it is larger than the sum of its proper divisors (2821810627004).

5643621254002 is a wasteful number, since it uses less digits than its factorization.

5643621254002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821810627003.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 5643621254002 in words is "five trillion, six hundred forty-three billion, six hundred twenty-one million, two hundred fifty-four thousand, two".