51497192123520 has 3072 divisors, whose sum is σ = 208360424079360. Its totient is φ = 10729635840000.

The previous prime is 51497192123453. The next prime is 51497192123557. The reversal of 51497192123520 is 2532129179415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 405489701697 + ... + 405489701823.

It is an arithmetic number, because the mean of its divisors is an integer number (67825658880).

Almost surely, 2^{51497192123520} 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 51497192123520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104180212039680).

51497192123520 is an abundant number, since it is smaller than the sum of its proper divisors (156863231955840).

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

51497192123520 is a wasteful number, since it uses less digits than its factorization.

51497192123520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 51497192123520 in words is "fifty-one trillion, four hundred ninety-seven billion, one hundred ninety-two million, one hundred twenty-three thousand, five hundred twenty".