73878487847 has 2 divisors, whose sum is σ = 73878487848. Its totient is φ = 73878487846.

The previous prime is 73878487807. The next prime is 73878487861. The reversal of 73878487847 is 74878487837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73878487847 - 2¹⁰ = 73878486823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73878487807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36939243923 + 36939243924.

It is an arithmetic number, because the mean of its divisors is an integer number (36939243924).

Almost surely, 2^73878487847 is an apocalyptic number.

73878487847 is a deficient number, since it is larger than the sum of its proper divisors (1).

73878487847 is an equidigital number, since it uses as much as digits as its factorization.

73878487847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472055808, while the sum is 71.

The spelling of 73878487847 in words is "seventy-three billion, eight hundred seventy-eight million, four hundred eighty-seven thousand, eight hundred forty-seven".