190686721253 has 16 divisors (see below), whose sum is σ = 233548826880. Its totient is φ = 152114029056.

The previous prime is 190686721217. The next prime is 190686721261. The reversal of 190686721253 is 352127686091.

It is a happy number.

190686721253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 190686721253 - 2⁶ = 190686721189 is a prime.

It is a super-2 number, since 2×190686721253² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190686721283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15999308 + ... + 16011221.

It is an arithmetic number, because the mean of its divisors is an integer number (14596801680).

Almost surely, 2^190686721253 is an apocalyptic number.

It is an amenable number.

190686721253 is a deficient number, since it is larger than the sum of its proper divisors (42862105627).

190686721253 is a wasteful number, since it uses less digits than its factorization.

190686721253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32010596.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 190686721253 in words is "one hundred ninety billion, six hundred eighty-six million, seven hundred twenty-one thousand, two hundred fifty-three".