78446288264487 has 32 divisors (see below), whose sum is σ = 123390778511616. Its totient is φ = 43703935603200.

The previous prime is 78446288264389. The next prime is 78446288264501.

78446288264487 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78446288264487 - 2⁸ = 78446288264231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78446288264587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379271053 + ... + 379477830.

It is an arithmetic number, because the mean of its divisors is an integer number (3855961828488).

Almost surely, 2^{78446288264487} is an apocalyptic number.

78446288264487 is a deficient number, since it is larger than the sum of its proper divisors (44944490247129).

78446288264487 is a wasteful number, since it uses less digits than its factorization.

78446288264487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758749151.

The product of its digits is 7398752256, while the sum is 78.

The spelling of 78446288264487 in words is "seventy-eight trillion, four hundred forty-six billion, two hundred eighty-eight million, two hundred sixty-four thousand, four hundred eighty-seven".