5643536977 has 4 divisors (see below), whose sum is σ = 6077655220. Its totient is φ = 5209418736.

The previous prime is 5643536953. The next prime is 5643536981. The reversal of 5643536977 is 7796353465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2918592576 + 2724944401 = 54024^2 + 52201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5643536977 is a prime.

It is a super-2 number, since 2×5643536977² = 63699019221532597058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5643536917) 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, 217059102 + ... + 217059127.

It is an arithmetic number, because the mean of its divisors is an integer number (1519413805).

Almost surely, 2^5643536977 is an apocalyptic number.

It is an amenable number.

5643536977 is a deficient number, since it is larger than the sum of its proper divisors (434118243).

5643536977 is a wasteful number, since it uses less digits than its factorization.

5643536977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434118242.

The product of its digits is 14288400, while the sum is 55.

The square root of 5643536977 is about 75123.4782008927. The cubic root of 5643536977 is about 1780.3981116215.

The spelling of 5643536977 in words is "five billion, six hundred forty-three million, five hundred thirty-six thousand, nine hundred seventy-seven".