87934218451 has 2 divisors, whose sum is σ = 87934218452. Its totient is φ = 87934218450.

The previous prime is 87934218409. The next prime is 87934218461. The reversal of 87934218451 is 15481243978.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87934218451 is a prime.

It is not a weakly prime, because it can be changed into another prime (87934218461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43967109225 + 43967109226.

It is an arithmetic number, because the mean of its divisors is an integer number (43967109226).

Almost surely, 2^87934218451 is an apocalyptic number.

87934218451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934218451 is an equidigital number, since it uses as much as digits as its factorization.

87934218451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The spelling of 87934218451 in words is "eighty-seven billion, nine hundred thirty-four million, two hundred eighteen thousand, four hundred fifty-one".