2643551156 has 6 divisors (see below), whose sum is σ = 4626214530. Its totient is φ = 1321775576.

The previous prime is 2643551107. The next prime is 2643551159. The reversal of 2643551156 is 6511553462.

2643551156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2390232100 + 253319056 = 48890^2 + 15916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643551159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330443891 + ... + 330443898.

It is an arithmetic number, because the mean of its divisors is an integer number (771035755).

Almost surely, 2^2643551156 is an apocalyptic number.

It is an amenable number.

2643551156 is a deficient number, since it is larger than the sum of its proper divisors (1982663374).

2643551156 is a wasteful number, since it uses less digits than its factorization.

2643551156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660887793 (or 660887791 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 2643551156 is about 51415.4758414235. The cubic root of 2643551156 is about 1382.7040650914.

The spelling of 2643551156 in words is "two billion, six hundred forty-three million, five hundred fifty-one thousand, one hundred fifty-six".