20419667522351 has 4 divisors (see below), whose sum is σ = 20432421844704. Its totient is φ = 20406913200000.

The previous prime is 20419667522341. The next prime is 20419667522363. The reversal of 20419667522351 is 15322576691402.

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 20419667522351 - 2¹⁰ = 20419667521327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20419667522293 and 20419667522302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20419667522341) 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, 6377158775 + ... + 6377161976.

It is an arithmetic number, because the mean of its divisors is an integer number (5108105461176).

Almost surely, 2^{20419667522351} is an apocalyptic number.

20419667522351 is a deficient number, since it is larger than the sum of its proper divisors (12754322353).

20419667522351 is a wasteful number, since it uses less digits than its factorization.

20419667522351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12754322352.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 20419667522351 in words is "twenty trillion, four hundred nineteen billion, six hundred sixty-seven million, five hundred twenty-two thousand, three hundred fifty-one".