188661262720022 has 16 divisors (see below), whose sum is σ = 283448889166320. Its totient is φ = 94178382079008.

The previous prime is 188661262719991. The next prime is 188661262720031. The reversal of 188661262720022 is 220027262166881.

It is a super-2 number, since 2×188661262720022² (a number of 29 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 16022993 + ... + 25180524.

It is an arithmetic number, because the mean of its divisors is an integer number (17715555572895).

Almost surely, 2^{188661262720022} is an apocalyptic number.

188661262720022 is a deficient number, since it is larger than the sum of its proper divisors (94787626446298).

188661262720022 is a wasteful number, since it uses less digits than its factorization.

188661262720022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41207215.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 188661262720022 in words is "one hundred eighty-eight trillion, six hundred sixty-one billion, two hundred sixty-two million, seven hundred twenty thousand, twenty-two".