20153514919 has 4 divisors (see below), whose sum is σ = 20169994896. Its totient is φ = 20137034944.

The previous prime is 20153514893. The next prime is 20153514959. The reversal of 20153514919 is 91941535102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91941535102 = 2 ⋅45970767551.

It is a cyclic number.

It is not a de Polignac number, because 20153514919 - 2¹¹ = 20153512871 is a prime.

It is a super-2 number, since 2×20153514919² (a number of 21 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 (20153514959) 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, 8238154 + ... + 8240599.

It is an arithmetic number, because the mean of its divisors is an integer number (5042498724).

Almost surely, 2^20153514919 is an apocalyptic number.

20153514919 is a deficient number, since it is larger than the sum of its proper divisors (16479977).

20153514919 is a wasteful number, since it uses less digits than its factorization.

20153514919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16479976.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 20153514919 in words is "twenty billion, one hundred fifty-three million, five hundred fourteen thousand, nine hundred nineteen".