2555600386646 has 4 divisors (see below), whose sum is σ = 3833400579972. Its totient is φ = 1277800193322.

The previous prime is 2555600386621. The next prime is 2555600386649. The reversal of 2555600386646 is 6466830065552.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2555600386591 and 2555600386600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555600386649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638900096660 + ... + 638900096663.

It is an arithmetic number, because the mean of its divisors is an integer number (958350144993).

Almost surely, 2^{2555600386646} is an apocalyptic number.

2555600386646 is a deficient number, since it is larger than the sum of its proper divisors (1277800193326).

2555600386646 is a wasteful number, since it uses less digits than its factorization.

2555600386646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277800193325.

The product of its (nonzero) digits is 31104000, while the sum is 56.

The spelling of 2555600386646 in words is "two trillion, five hundred fifty-five billion, six hundred million, three hundred eighty-six thousand, six hundred forty-six".