2645063311672 has 8 divisors (see below), whose sum is σ = 4959493709400. Its totient is φ = 1322531655832.

The previous prime is 2645063311643. The next prime is 2645063311673. The reversal of 2645063311672 is 2761133605462.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2645063311672² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645063311673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165316456972 + ... + 165316456987.

It is an arithmetic number, because the mean of its divisors is an integer number (619936713675).

Almost surely, 2^{2645063311672} is an apocalyptic number.

It is an amenable number.

2645063311672 is a deficient number, since it is larger than the sum of its proper divisors (2314430397728).

2645063311672 is a wasteful number, since it uses less digits than its factorization.

2645063311672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330632913965 (or 330632913961 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 2645063311672 in words is "two trillion, six hundred forty-five billion, sixty-three million, three hundred eleven thousand, six hundred seventy-two".