51262803720 has 384 divisors, whose sum is σ = 178319232000. Its totient is φ = 13238588160.

The previous prime is 51262803677. The next prime is 51262803727. The reversal of 51262803720 is 2730826215.

51262803720 is a `hidden beast` number, since 5 + 1 + 2 + 6 + 280 + 372 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51262803727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40716451 + ... + 40717709.

It is an arithmetic number, because the mean of its divisors is an integer number (464373000).

Almost surely, 2^51262803720 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 51262803720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89159616000).

51262803720 is an abundant number, since it is smaller than the sum of its proper divisors (127056428280).

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

51262803720 is a wasteful number, since it uses less digits than its factorization.

51262803720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 51262803720 in words is "fifty-one billion, two hundred sixty-two million, eight hundred three thousand, seven hundred twenty".