191600667217428 has 48 divisors (see below), whose sum is σ = 519311098045824. Its totient is φ = 53845620762240.

The previous prime is 191600667217411. The next prime is 191600667217447. The reversal of 191600667217428 is 824712766006191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18696390975 + ... + 18696401222.

It is an arithmetic number, because the mean of its divisors is an integer number (10818981209288).

Almost surely, 2^{191600667217428} is an apocalyptic number.

It is an amenable number.

191600667217428 is an abundant number, since it is smaller than the sum of its proper divisors (327710430828396).

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

191600667217428 is a wasteful number, since it uses less digits than its factorization.

191600667217428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37392792272 (or 37392792270 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 191600667217428 in words is "one hundred ninety-one trillion, six hundred billion, six hundred sixty-seven million, two hundred seventeen thousand, four hundred twenty-eight".