11751720072072 has 16 divisors (see below), whose sum is σ = 29379300180240. Its totient is φ = 3917240024016.

The previous prime is 11751720072061. The next prime is 11751720072109. The reversal of 11751720072072 is 27027002715711.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244827501478 + ... + 244827501525.

It is an arithmetic number, because the mean of its divisors is an integer number (1836206261265).

Almost surely, 2^{11751720072072} is an apocalyptic number.

11751720072072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11751720072072 is an abundant number, since it is smaller than the sum of its proper divisors (17627580108168).

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

11751720072072 is a wasteful number, since it uses less digits than its factorization.

11751720072072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489655003012 (or 489655003008 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 42.

Adding to 11751720072072 its reverse (27027002715711), we get a palindrome (38778722787783).

The spelling of 11751720072072 in words is "eleven trillion, seven hundred fifty-one billion, seven hundred twenty million, seventy-two thousand, seventy-two".