20152155047 has 2 divisors, whose sum is σ = 20152155048. Its totient is φ = 20152155046.

The previous prime is 20152155031. The next prime is 20152155083. The reversal of 20152155047 is 74055125102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20152155047 - 2⁴ = 20152155031 is a prime.

It is a super-2 number, since 2×20152155047² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20152155097) 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 as a sum of consecutive naturals, namely, 10076077523 + 10076077524.

It is an arithmetic number, because the mean of its divisors is an integer number (10076077524).

Almost surely, 2^20152155047 is an apocalyptic number.

20152155047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20152155047 is an equidigital number, since it uses as much as digits as its factorization.

20152155047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 20152155047 in words is "twenty billion, one hundred fifty-two million, one hundred fifty-five thousand, forty-seven".