87461574157 has 2 divisors, whose sum is σ = 87461574158. Its totient is φ = 87461574156.

The previous prime is 87461574149. The next prime is 87461574163. The reversal of 87461574157 is 75147516478.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77409707076 + 10051867081 = 278226^2 + 100259^2 .

It is a cyclic number.

It is not a de Polignac number, because 87461574157 - 2³ = 87461574149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87461574098 and 87461574107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87411574157) 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, 43730787078 + 43730787079.

It is an arithmetic number, because the mean of its divisors is an integer number (43730787079).

Almost surely, 2^87461574157 is an apocalyptic number.

It is an amenable number.

87461574157 is a deficient number, since it is larger than the sum of its proper divisors (1).

87461574157 is an equidigital number, since it uses as much as digits as its factorization.

87461574157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6585600, while the sum is 55.

The spelling of 87461574157 in words is "eighty-seven billion, four hundred sixty-one million, five hundred seventy-four thousand, one hundred fifty-seven".