511556055645 has 16 divisors (see below), whose sum is σ = 866636141760. Its totient is φ = 256781078784.

The previous prime is 511556055631. The next prime is 511556055671. The reversal of 511556055645 is 546550655115.

It is not a de Polignac number, because 511556055645 - 2⁶ = 511556055581 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 511556055594 and 511556055603.

It is a congruent number.

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, 1003050835 + ... + 1003051344.

It is an arithmetic number, because the mean of its divisors is an integer number (54164758860).

Almost surely, 2^511556055645 is an apocalyptic number.

It is an amenable number.

511556055645 is a deficient number, since it is larger than the sum of its proper divisors (355080086115).

511556055645 is a wasteful number, since it uses less digits than its factorization.

511556055645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006102204.

The product of its (nonzero) digits is 2250000, while the sum is 48.

The spelling of 511556055645 in words is "five hundred eleven billion, five hundred fifty-six million, fifty-five thousand, six hundred forty-five".