87381365983 has 2 divisors, whose sum is σ = 87381365984. Its totient is φ = 87381365982.

The previous prime is 87381365977. The next prime is 87381365999. The reversal of 87381365983 is 38956318378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87381365983 - 2²¹ = 87379268831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87381365923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43690682991 + 43690682992.

It is an arithmetic number, because the mean of its divisors is an integer number (43690682992).

Almost surely, 2^87381365983 is an apocalyptic number.

87381365983 is a deficient number, since it is larger than the sum of its proper divisors (1).

87381365983 is an equidigital number, since it uses as much as digits as its factorization.

87381365983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 61.

The spelling of 87381365983 in words is "eighty-seven billion, three hundred eighty-one million, three hundred sixty-five thousand, nine hundred eighty-three".