5131449769320 has 1152 divisors, whose sum is σ = 20846103183360. Its totient is φ = 1130779077120.

The previous prime is 5131449769279. The next prime is 5131449769349. The reversal of 5131449769320 is 239679441315.

5131449769320 is a `hidden beast` number, since 5 + 131 + 44 + 97 + 69 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 5418637087 + ... + 5418638033.

It is an arithmetic number, because the mean of its divisors is an integer number (18095575680).

Almost surely, 2^{5131449769320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5131449769320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10423051591680).

5131449769320 is an abundant number, since it is smaller than the sum of its proper divisors (15714653414040).

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

5131449769320 is a wasteful number, since it uses less digits than its factorization.

5131449769320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 5131449769320 in words is "five trillion, one hundred thirty-one billion, four hundred forty-nine million, seven hundred sixty-nine thousand, three hundred twenty".