153806685858 has 24 divisors (see below), whose sum is σ = 380854651008. Its totient is φ = 43944767352.

The previous prime is 153806685841. The next prime is 153806685863. The reversal of 153806685858 is 858586608351.

153806685858 is a `hidden beast` number, since 15 + 38 + 0 + 6 + 6 + 8 + 585 + 8 = 666.

It is a super-2 number, since 2×153806685858² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 153806685795 and 153806685804.

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, 610343866 + ... + 610344117.

It is an arithmetic number, because the mean of its divisors is an integer number (15868943792).

Almost surely, 2^153806685858 is an apocalyptic number.

153806685858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

153806685858 is an abundant number, since it is smaller than the sum of its proper divisors (227047965150).

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

153806685858 is a wasteful number, since it uses less digits than its factorization.

153806685858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220687998 (or 1220687995 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 63.

The spelling of 153806685858 in words is "one hundred fifty-three billion, eight hundred six million, six hundred eighty-five thousand, eight hundred fifty-eight".