511105556106 has 12 divisors (see below), whose sum is σ = 1107395371602. Its totient is φ = 170368518696.

The previous prime is 511105556081. The next prime is 511105556141. The reversal of 511105556106 is 601655501115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 507506636025 + 3598920081 = 712395^2 + 59991^2 .

It is a super-2 number, since 2×511105556106² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14197376541 + ... + 14197376576.

Almost surely, 2^511105556106 is an apocalyptic number.

511105556106 is an abundant number, since it is smaller than the sum of its proper divisors (596289815496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511105556106 is a wasteful number, since it uses less digits than its factorization.

511105556106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28394753125 (or 28394753122 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 511105556106 in words is "five hundred eleven billion, one hundred five million, five hundred fifty-six thousand, one hundred six".