191154232499968 has 18 divisors (see below), whose sum is σ = 381561768779744. Its totient is φ = 95577116249856.

The previous prime is 191154232499947. The next prime is 191154232499983. The reversal of 191154232499968 is 869994232451191.

It is a self number, because there is not a number n which added to its sum of digits gives 191154232499968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373348110096 + ... + 373348110607.

Almost surely, 2^{191154232499968} is an apocalyptic number.

It is an amenable number.

191154232499968 is a deficient number, since it is larger than the sum of its proper divisors (190407536279776).

191154232499968 is an frugal number, since it uses more digits than its factorization.

191154232499968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746696220719 (or 746696220705 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 73.

The spelling of 191154232499968 in words is "one hundred ninety-one trillion, one hundred fifty-four billion, two hundred thirty-two million, four hundred ninety-nine thousand, nine hundred sixty-eight".