213154511887 has 2 divisors, whose sum is σ = 213154511888. Its totient is φ = 213154511886.

The previous prime is 213154511881. The next prime is 213154511903. The reversal of 213154511887 is 788115451312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213154511887 - 2¹⁵ = 213154479119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213154511881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106577255943 + 106577255944.

It is an arithmetic number, because the mean of its divisors is an integer number (106577255944).

Almost surely, 2^213154511887 is an apocalyptic number.

213154511887 is a deficient number, since it is larger than the sum of its proper divisors (1).

213154511887 is an equidigital number, since it uses as much as digits as its factorization.

213154511887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 46.

The spelling of 213154511887 in words is "two hundred thirteen billion, one hundred fifty-four million, five hundred eleven thousand, eight hundred eighty-seven".