511154104040 has 32 divisors (see below), whose sum is σ = 1200100942080. Its totient is φ = 195572004672.

The previous prime is 511154104033. The next prime is 511154104057. The reversal of 511154104040 is 40401451115.

It is a super-2 number, since 2×511154104040² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277800224 + ... + 277802063.

It is an arithmetic number, because the mean of its divisors is an integer number (37503154440).

Almost surely, 2^511154104040 is an apocalyptic number.

It is an amenable number.

511154104040 is an abundant number, since it is smaller than the sum of its proper divisors (688946838040).

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

511154104040 is a wasteful number, since it uses less digits than its factorization.

511154104040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555602321 (or 555602317 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 511154104040 its reverse (40401451115), we get a palindrome (551555555155).

The spelling of 511154104040 in words is "five hundred eleven billion, one hundred fifty-four million, one hundred four thousand, forty".