511211561116 has 6 divisors (see below), whose sum is σ = 894620231960. Its totient is φ = 255605780556.

The previous prime is 511211561071. The next prime is 511211561131. The reversal of 511211561116 is 611165112115.

It is a happy number.

It is a super-2 number, since 2×511211561116² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63901445136 + ... + 63901445143.

Almost surely, 2^511211561116 is an apocalyptic number.

It is an amenable number.

511211561116 is a deficient number, since it is larger than the sum of its proper divisors (383408670844).

511211561116 is a wasteful number, since it uses less digits than its factorization.

511211561116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127802890283 (or 127802890281 counting only the distinct ones).

The product of its digits is 1800, while the sum is 31.

The spelling of 511211561116 in words is "five hundred eleven billion, two hundred eleven million, five hundred sixty-one thousand, one hundred sixteen".