15551453631157 has 2 divisors, whose sum is σ = 15551453631158. Its totient is φ = 15551453631156.

The previous prime is 15551453631113. The next prime is 15551453631167. The reversal of 15551453631157 is 75113635415551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15254133167716 + 297320463441 = 3905654^2 + 545271^2 .

It is a cyclic number.

It is not a de Polignac number, because 15551453631157 - 2¹⁹ = 15551453106869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15551453631167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7775726815578 + 7775726815579.

It is an arithmetic number, because the mean of its divisors is an integer number (7775726815579).

Almost surely, 2^{15551453631157} is an apocalyptic number.

It is an amenable number.

15551453631157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15551453631157 is an equidigital number, since it uses as much as digits as its factorization.

15551453631157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4725000, while the sum is 52.

The spelling of 15551453631157 in words is "fifteen trillion, five hundred fifty-one billion, four hundred fifty-three million, six hundred thirty-one thousand, one hundred fifty-seven".