511301242540 has 48 divisors (see below), whose sum is σ = 1182942188064. Its totient is φ = 184086848000.

The previous prime is 511301242519. The next prime is 511301242579. The reversal of 511301242540 is 45242103115.

It is a super-2 number, since 2×511301242540² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511301242499 and 511301242508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11483209 + ... + 11527648.

It is an arithmetic number, because the mean of its divisors is an integer number (24644628918).

Almost surely, 2^511301242540 is an apocalyptic number.

It is an amenable number.

511301242540 is an abundant number, since it is smaller than the sum of its proper divisors (671640945524).

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

511301242540 is a wasteful number, since it uses less digits than its factorization.

511301242540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23010978 (or 23010976 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 511301242540 its reverse (45242103115), we get a palindrome (556543345655).

The spelling of 511301242540 in words is "five hundred eleven billion, three hundred one million, two hundred forty-two thousand, five hundred forty".