87372380191 has 2 divisors, whose sum is σ = 87372380192. Its totient is φ = 87372380190.

The previous prime is 87372380159. The next prime is 87372380219. The reversal of 87372380191 is 19108327378.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87372380191 - 2⁵ = 87372380159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87372389191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43686190095 + 43686190096.

It is an arithmetic number, because the mean of its divisors is an integer number (43686190096).

Almost surely, 2^87372380191 is an apocalyptic number.

87372380191 is a deficient number, since it is larger than the sum of its proper divisors (1).

87372380191 is an equidigital number, since it uses as much as digits as its factorization.

87372380191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 87372380191 in words is "eighty-seven billion, three hundred seventy-two million, three hundred eighty thousand, one hundred ninety-one".