215542406050157 has 2 divisors, whose sum is σ = 215542406050158. Its totient is φ = 215542406050156.

The previous prime is 215542406050093. The next prime is 215542406050201. The reversal of 215542406050157 is 751050604245512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150656255672521 + 64886150377636 = 12274211^2 + 8055194^2 .

It is a cyclic number.

It is not a de Polignac number, because 215542406050157 - 2⁶ = 215542406050093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215542406055157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107771203025078 + 107771203025079.

It is an arithmetic number, because the mean of its divisors is an integer number (107771203025079).

Almost surely, 2^{215542406050157} is an apocalyptic number.

It is an amenable number.

215542406050157 is a deficient number, since it is larger than the sum of its proper divisors (1).

215542406050157 is an equidigital number, since it uses as much as digits as its factorization.

215542406050157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680000, while the sum is 47.

The spelling of 215542406050157 in words is "two hundred fifteen trillion, five hundred forty-two billion, four hundred six million, fifty thousand, one hundred fifty-seven".