53258136985 has 8 divisors (see below), whose sum is σ = 64158442056. Its totient is φ = 42440724480.

The previous prime is 53258136961. The next prime is 53258137003. The reversal of 53258136985 is 58963185235.

It can be written as a sum of positive squares in 4 ways, for example, as 6508778329 + 46749358656 = 80677^2 + 216216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53258136985 - 2⁷ = 53258136857 is a prime.

It is a super-2 number, since 2×53258136985² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 20721726 + ... + 20724295.

It is an arithmetic number, because the mean of its divisors is an integer number (8019805257).

Almost surely, 2^53258136985 is an apocalyptic number.

It is an amenable number.

53258136985 is a deficient number, since it is larger than the sum of its proper divisors (10900305071).

53258136985 is a wasteful number, since it uses less digits than its factorization.

53258136985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41446283.

The product of its digits is 7776000, while the sum is 55.

The spelling of 53258136985 in words is "fifty-three billion, two hundred fifty-eight million, one hundred thirty-six thousand, nine hundred eighty-five".