2661645606052 has 48 divisors (see below), whose sum is σ = 4732187152000. Its totient is φ = 1309778553600.

The previous prime is 2661645605939. The next prime is 2661645606071. The reversal of 2661645606052 is 2506065461662.

It is a junction number, because it is equal to n+sod(n) for n = 2661645605987 and 2661645606005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52119643 + ... + 52170685.

Almost surely, 2^{2661645606052} is an apocalyptic number.

It is an amenable number.

2661645606052 is a deficient number, since it is larger than the sum of its proper divisors (2070541545948).

2661645606052 is a wasteful number, since it uses less digits than its factorization.

2661645606052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51956 (or 51954 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 2661645606052 in words is "two trillion, six hundred sixty-one billion, six hundred forty-five million, six hundred six thousand, fifty-two".