20381748151 has 4 divisors (see below), whose sum is σ = 20419422904. Its totient is φ = 20344073400.

The previous prime is 20381748139. The next prime is 20381748161. The reversal of 20381748151 is 15184718302.

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 20381748151 - 2⁵ = 20381748119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20381748131) 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, 18836565 + ... + 18837646.

It is an arithmetic number, because the mean of its divisors is an integer number (5104855726).

Almost surely, 2^20381748151 is an apocalyptic number.

20381748151 is a deficient number, since it is larger than the sum of its proper divisors (37674753).

20381748151 is an equidigital number, since it uses as much as digits as its factorization.

20381748151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37674752.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 20381748151 in words is "twenty billion, three hundred eighty-one million, seven hundred forty-eight thousand, one hundred fifty-one".