51010713240 has 96 divisors (see below), whose sum is σ = 155671141680. Its totient is φ = 13372190464.

The previous prime is 51010713203. The next prime is 51010713293. The reversal of 51010713240 is 4231701015.

It is a super-2 number, since 2×51010713240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51010713240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356662 + ... + 478778.

Almost surely, 2^51010713240 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 51010713240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77835570840).

51010713240 is an abundant number, since it is smaller than the sum of its proper divisors (104660428440).

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

51010713240 is a wasteful number, since it uses less digits than its factorization.

51010713240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122249 (or 122186 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The spelling of 51010713240 in words is "fifty-one billion, ten million, seven hundred thirteen thousand, two hundred forty".