190961668855 has 16 divisors (see below), whose sum is σ = 231880993344. Its totient is φ = 150957780480.

The previous prime is 190961668847. The next prime is 190961668867. The reversal of 190961668855 is 558866169091.

It is not a de Polignac number, because 190961668855 - 2³ = 190961668847 is a prime.

It is a super-2 number, since 2×190961668855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164754 + ... + 639583.

It is an arithmetic number, because the mean of its divisors is an integer number (14492562084).

Almost surely, 2^190961668855 is an apocalyptic number.

190961668855 is a deficient number, since it is larger than the sum of its proper divisors (40919324489).

190961668855 is a wasteful number, since it uses less digits than its factorization.

190961668855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804906.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The spelling of 190961668855 in words is "one hundred ninety billion, nine hundred sixty-one million, six hundred sixty-eight thousand, eight hundred fifty-five".