19741149361991 has 8 divisors (see below), whose sum is σ = 19888417592784. Its totient is φ = 19594415680960.

The previous prime is 19741149361957. The next prime is 19741149362069. The reversal of 19741149361991 is 19916394114791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19741149361991 - 2²² = 19741145167687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19741149331991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133563305 + ... + 133711026.

It is an arithmetic number, because the mean of its divisors is an integer number (2486052199098).

Almost surely, 2^{19741149361991} is an apocalyptic number.

19741149361991 is a deficient number, since it is larger than the sum of its proper divisors (147268230793).

19741149361991 is a wasteful number, since it uses less digits than its factorization.

19741149361991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267274881.

The product of its digits is 13226976, while the sum is 65.

The spelling of 19741149361991 in words is "nineteen trillion, seven hundred forty-one billion, one hundred forty-nine million, three hundred sixty-one thousand, nine hundred ninety-one".