20919383133733 has 8 divisors (see below), whose sum is σ = 23907896189568. Its totient is φ = 17930877515664.

The previous prime is 20919383133659. The next prime is 20919383133743. The reversal of 20919383133733 is 33733138391902.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20919383133733 is a prime.

It is a super-2 number, since 2×20919383133733² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20919383133743) 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, 6949935 + ... + 9494227.

It is an arithmetic number, because the mean of its divisors is an integer number (2988487023696).

Almost surely, 2^{20919383133733} is an apocalyptic number.

It is an amenable number.

20919383133733 is a deficient number, since it is larger than the sum of its proper divisors (2988513055835).

20919383133733 is a wasteful number, since it uses less digits than its factorization.

20919383133733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718883.

The product of its (nonzero) digits is 6613488, while the sum is 55.

The spelling of 20919383133733 in words is "twenty trillion, nine hundred nineteen billion, three hundred eighty-three million, one hundred thirty-three thousand, seven hundred thirty-three".