10401278687 has 2 divisors, whose sum is σ = 10401278688. Its totient is φ = 10401278686.

The previous prime is 10401278651. The next prime is 10401278743. The reversal of 10401278687 is 78687210401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10401278687 - 2²⁰ = 10400230111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10401278887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200639343 + 5200639344.

It is an arithmetic number, because the mean of its divisors is an integer number (5200639344).

Almost surely, 2^10401278687 is an apocalyptic number.

10401278687 is a deficient number, since it is larger than the sum of its proper divisors (1).

10401278687 is an equidigital number, since it uses as much as digits as its factorization.

10401278687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 10401278687 in words is "ten billion, four hundred one million, two hundred seventy-eight thousand, six hundred eighty-seven".