258018116436 has 36 divisors (see below), whose sum is σ = 652324350132. Its totient is φ = 85991284224.

The previous prime is 258018116429. The next prime is 258018116501. The reversal of 258018116436 is 634611810852.

258018116436 is a `hidden beast` number, since 2 + 580 + 1 + 8 + 1 + 1 + 64 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 216230580036 + 41787536400 = 465006^2 + 204420^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 258018116391 and 258018116400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400995 + ... + 822698.

It is an arithmetic number, because the mean of its divisors is an integer number (18120120837).

Almost surely, 2^258018116436 is an apocalyptic number.

It is an amenable number.

258018116436 is an abundant number, since it is smaller than the sum of its proper divisors (394306233696).

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

258018116436 is a wasteful number, since it uses less digits than its factorization.

258018116436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229560 (or 1229555 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 258018116436 in words is "two hundred fifty-eight billion, eighteen million, one hundred sixteen thousand, four hundred thirty-six".