511020125055 has 24 divisors (see below), whose sum is σ = 966292601040. Its totient is φ = 247767333120.

The previous prime is 511020124987. The next prime is 511020125059. The reversal of 511020125055 is 550521020115.

511020125055 is a `hidden beast` number, since 51 + 102 + 0 + 1 + 2 + 505 + 5 = 666.

It is not a de Polignac number, because 511020125055 - 2⁹ = 511020124543 is a prime.

It is a super-2 number, since 2×511020125055² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511020125059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 516181450 + ... + 516182439.

It is an arithmetic number, because the mean of its divisors is an integer number (40262191710).

Almost surely, 2^511020125055 is an apocalyptic number.

511020125055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

511020125055 is a deficient number, since it is larger than the sum of its proper divisors (455272475985).

511020125055 is a wasteful number, since it uses less digits than its factorization.

511020125055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032363911 (or 1032363908 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 511020125055 in words is "five hundred eleven billion, twenty million, one hundred twenty-five thousand, fifty-five".