510000212540 has 96 divisors (see below), whose sum is σ = 1318869210624. Its totient is φ = 161319133440.

The previous prime is 510000212471. The next prime is 510000212543. The reversal of 510000212540 is 45212000015.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (510000212543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3322895 + ... + 3472985.

It is an arithmetic number, because the mean of its divisors is an integer number (13738220944).

Almost surely, 2^510000212540 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 510000212540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659434605312).

510000212540 is an abundant number, since it is smaller than the sum of its proper divisors (808868998084).

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

510000212540 is a wasteful number, since it uses less digits than its factorization.

510000212540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151987 (or 151985 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 510000212540 its reverse (45212000015), we get a palindrome (555212212555).

The spelling of 510000212540 in words is "five hundred ten billion, two hundred twelve thousand, five hundred forty".