512091211320 has 256 divisors, whose sum is σ = 1860975043200. Its totient is φ = 126052941312.

The previous prime is 512091211309. The next prime is 512091211339. The reversal of 512091211320 is 23112190215.

512091211320 is a `hidden beast` number, since 5 + 120 + 9 + 1 + 211 + 320 = 666.

It is a super-2 number, since 2×512091211320² (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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 912094 + ... + 1362386.

Almost surely, 2^512091211320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512091211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930487521600).

512091211320 is an abundant number, since it is smaller than the sum of its proper divisors (1348883831880).

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

512091211320 is a wasteful number, since it uses less digits than its factorization.

512091211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450338 (or 450316 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 512091211320 in words is "five hundred twelve billion, ninety-one million, two hundred eleven thousand, three hundred twenty".