63378766401405 has 128 divisors (see below), whose sum is σ = 125423520768000. Its totient is φ = 26612744223744.

The previous prime is 63378766401367. The next prime is 63378766401451. The reversal of 63378766401405 is 50410466787336.

It is not a de Polignac number, because 63378766401405 - 2¹⁵ = 63378766368637 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 228707871 + ... + 228984819.

It is an arithmetic number, because the mean of its divisors is an integer number (979871256000).

Almost surely, 2^{63378766401405} is an apocalyptic number.

63378766401405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63378766401405 is a deficient number, since it is larger than the sum of its proper divisors (62044754366595).

63378766401405 is a wasteful number, since it uses less digits than its factorization.

63378766401405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277803.

The product of its (nonzero) digits is 60963840, while the sum is 60.

The spelling of 63378766401405 in words is "sixty-three trillion, three hundred seventy-eight billion, seven hundred sixty-six million, four hundred one thousand, four hundred five".