20954514607199 has 8 divisors (see below), whose sum is σ = 21521830166880. Its totient is φ = 20387250485856.

The previous prime is 20954514607111. The next prime is 20954514607217. The reversal of 20954514607199 is 99170641545902.

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

It is not a de Polignac number, because 20954514607199 - 2²⁰ = 20954513558623 is a prime.

It is a super-2 number, since 2×20954514607199² (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 (20954514607099) 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, 12033104 + ... + 13663989.

It is an arithmetic number, because the mean of its divisors is an integer number (2690228770860).

Almost surely, 2^{20954514607199} is an apocalyptic number.

20954514607199 is a deficient number, since it is larger than the sum of its proper divisors (567315559681).

20954514607199 is a wasteful number, since it uses less digits than its factorization.

20954514607199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25719169.

The product of its (nonzero) digits is 24494400, while the sum is 62.

The spelling of 20954514607199 in words is "twenty trillion, nine hundred fifty-four billion, five hundred fourteen million, six hundred seven thousand, one hundred ninety-nine".