509967787522420 has 48 divisors (see below), whose sum is σ = 1091581296781248. Its totient is φ = 200080116783360.

The previous prime is 509967787522357. The next prime is 509967787522423. The reversal of 509967787522420 is 24225787769905.

It is a happy number.

It is a super-2 number, since 2×509967787522420² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509967787522423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816367986 + ... + 816992425.

It is an arithmetic number, because the mean of its divisors is an integer number (22741277016276).

Almost surely, 2^{509967787522420} is an apocalyptic number.

It is an amenable number.

509967787522420 is an abundant number, since it is smaller than the sum of its proper divisors (581613509258828).

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

509967787522420 is a wasteful number, since it uses less digits than its factorization.

509967787522420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633360720 (or 1633360718 counting only the distinct ones).

The product of its (nonzero) digits is 1066867200, while the sum is 73.

The spelling of 509967787522420 in words is "five hundred nine trillion, nine hundred sixty-seven billion, seven hundred eighty-seven million, five hundred twenty-two thousand, four hundred twenty".