20352541654019 has 4 divisors (see below), whose sum is σ = 20379286124760. Its totient is φ = 20325797183280.

The previous prime is 20352541653953. The next prime is 20352541654031. The reversal of 20352541654019 is 91045614525302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20352541654019 is a prime.

It is a super-2 number, since 2×20352541654019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20352541654079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13372234229 + ... + 13372235750.

It is an arithmetic number, because the mean of its divisors is an integer number (5094821531190).

Almost surely, 2^{20352541654019} is an apocalyptic number.

20352541654019 is a deficient number, since it is larger than the sum of its proper divisors (26744470741).

20352541654019 is an equidigital number, since it uses as much as digits as its factorization.

20352541654019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26744470740.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 20352541654019 in words is "twenty trillion, three hundred fifty-two billion, five hundred forty-one million, six hundred fifty-four thousand, nineteen".