51236420659200 has 4320 divisors, whose sum is σ = 239025646379520. Its totient is φ = 10612585267200.

The previous prime is 51236420659187. The next prime is 51236420659213. The reversal of 51236420659200 is 295602463215.

51236420659200 is a `hidden beast` number, since 5 + 1 + 2 + 36 + 4 + 20 + 6 + 592 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (51236420659187) and next prime (51236420659213).

It is a tau number, because it is divible by the number of its divisors (4320).

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

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 260083353502 + ... + 260083353698.

It is an arithmetic number, because the mean of its divisors is an integer number (55330010736).

Almost surely, 2^{51236420659200} is an apocalyptic number.

51236420659200 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 51236420659200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119512823189760).

51236420659200 is an abundant number, since it is smaller than the sum of its proper divisors (187789225720320).

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

51236420659200 is a wasteful number, since it uses less digits than its factorization.

51236420659200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 51236420659200 in words is "fifty-one trillion, two hundred thirty-six billion, four hundred twenty million, six hundred fifty-nine thousand, two hundred".