20365030117451 has 4 divisors (see below), whose sum is σ = 20365164247272. Its totient is φ = 20364895987632.

The previous prime is 20365030117417. The next prime is 20365030117457. The reversal of 20365030117451 is 15471103056302.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20365030117451 - 2⁴² = 15966983606347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20365030117457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66836906 + ... + 67140911.

It is an arithmetic number, because the mean of its divisors is an integer number (5091291061818).

Almost surely, 2^{20365030117451} is an apocalyptic number.

20365030117451 is a deficient number, since it is larger than the sum of its proper divisors (134129821).

20365030117451 is a wasteful number, since it uses less digits than its factorization.

20365030117451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134129820.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 20365030117451 in words is "twenty trillion, three hundred sixty-five billion, thirty million, one hundred seventeen thousand, four hundred fifty-one".