7111720451478 has 32 divisors (see below), whose sum is σ = 14364450038016. Its totient is φ = 2347081312608.

The previous prime is 7111720451471. The next prime is 7111720451501. The reversal of 7111720451478 is 8741540271117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7111720451471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882201 + ... + 4214987.

It is an arithmetic number, because the mean of its divisors is an integer number (448889063688).

Almost surely, 2^{7111720451478} is an apocalyptic number.

7111720451478 is an abundant number, since it is smaller than the sum of its proper divisors (7252729586538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7111720451478 is a wasteful number, since it uses less digits than its factorization.

7111720451478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337828.

The product of its (nonzero) digits is 439040, while the sum is 48.

The spelling of 7111720451478 in words is "seven trillion, one hundred eleven billion, seven hundred twenty million, four hundred fifty-one thousand, four hundred seventy-eight".