10401278719 has 4 divisors (see below), whose sum is σ = 11201377096. Its totient is φ = 9601180344.

The previous prime is 10401278687. The next prime is 10401278743. The reversal of 10401278719 is 91787210401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91787210401 = 191 ⋅480561311.

It is a cyclic number.

It is not a de Polignac number, because 10401278719 - 2⁵ = 10401278687 is a prime.

It is a super-2 number, since 2×10401278719² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10401278219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400049169 + ... + 400049194.

It is an arithmetic number, because the mean of its divisors is an integer number (2800344274).

Almost surely, 2^10401278719 is an apocalyptic number.

10401278719 is a deficient number, since it is larger than the sum of its proper divisors (800098377).

10401278719 is an equidigital number, since it uses as much as digits as its factorization.

10401278719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800098376.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 10401278719 in words is "ten billion, four hundred one million, two hundred seventy-eight thousand, seven hundred nineteen".