51492172723200 has 2376 divisors, whose sum is σ = 212403168868800. Its totient is φ = 11818657382400.

The previous prime is 51492172723183. The next prime is 51492172723213. The reversal of 51492172723200 is 232727129415.

51492172723200 is a `hidden beast` number, since 5 + 1 + 4 + 92 + 172 + 72 + 320 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 258754636701 + ... + 258754636899.

Almost surely, 2^{51492172723200} is an apocalyptic number.

51492172723200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51492172723200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106201584434400).

51492172723200 is an abundant number, since it is smaller than the sum of its proper divisors (160910996145600).

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

51492172723200 is a wasteful number, since it uses less digits than its factorization.

51492172723200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 51492172723200 in words is "fifty-one trillion, four hundred ninety-two billion, one hundred seventy-two million, seven hundred twenty-three thousand, two hundred".