20051302157 has 2 divisors, whose sum is σ = 20051302158. Its totient is φ = 20051302156.

The previous prime is 20051302147. The next prime is 20051302207. The reversal of 20051302157 is 75120315002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14162428036 + 5888874121 = 119006^2 + 76739^2 .

It is a cyclic number.

It is not a de Polignac number, because 20051302157 - 2¹⁴ = 20051285773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20051302147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10025651078 + 10025651079.

It is an arithmetic number, because the mean of its divisors is an integer number (10025651079).

Almost surely, 2^20051302157 is an apocalyptic number.

It is an amenable number.

20051302157 is a deficient number, since it is larger than the sum of its proper divisors (1).

20051302157 is an equidigital number, since it uses as much as digits as its factorization.

20051302157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

Adding to 20051302157 its reverse (75120315002), we get a palindrome (95171617159).

The spelling of 20051302157 in words is "twenty billion, fifty-one million, three hundred two thousand, one hundred fifty-seven".