20362653121 has 4 divisors (see below), whose sum is σ = 20382404544. Its totient is φ = 20342901700.

The previous prime is 20362653097. The next prime is 20362653131. The reversal of 20362653121 is 12135626302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12135626302 = 2 ⋅6067813151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20362653121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20362653131) 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, 9874165 + ... + 9876226.

It is an arithmetic number, because the mean of its divisors is an integer number (5095601136).

Almost surely, 2^20362653121 is an apocalyptic number.

It is an amenable number.

20362653121 is a deficient number, since it is larger than the sum of its proper divisors (19751423).

20362653121 is a wasteful number, since it uses less digits than its factorization.

20362653121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19751422.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 20362653121 in words is "twenty billion, three hundred sixty-two million, six hundred fifty-three thousand, one hundred twenty-one".