511015531212 has 48 divisors (see below), whose sum is σ = 1341625420800. Its totient is φ = 168182323920.

The previous prime is 511015531199. The next prime is 511015531223. The reversal of 511015531212 is 212135510115.

It is a happy number.

511015531212 is a `hidden beast` number, since 5 + 1 + 101 + 5 + 531 + 21 + 2 = 666.

It is a super-2 number, since 2×511015531212² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29938464 + ... + 29955527.

It is an arithmetic number, because the mean of its divisors is an integer number (27950529600).

Almost surely, 2^511015531212 is an apocalyptic number.

It is an amenable number.

511015531212 is an abundant number, since it is smaller than the sum of its proper divisors (830609889588).

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

511015531212 is a wasteful number, since it uses less digits than its factorization.

511015531212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59894083 (or 59894075 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 511015531212 in words is "five hundred eleven billion, fifteen million, five hundred thirty-one thousand, two hundred twelve".