51365366360 has 128 divisors (see below), whose sum is σ = 145281738240. Its totient is φ = 16009868160.

The previous prime is 51365366357. The next prime is 51365366387. The reversal of 51365366360 is 6366356315.

It is a super-2 number, since 2×51365366360² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303767 + ... + 441593.

It is an arithmetic number, because the mean of its divisors is an integer number (1135013580).

Almost surely, 2^51365366360 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 51365366360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72640869120).

51365366360 is an abundant number, since it is smaller than the sum of its proper divisors (93916371880).

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

51365366360 is a wasteful number, since it uses less digits than its factorization.

51365366360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137878 (or 137852 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 44.

The spelling of 51365366360 in words is "fifty-one billion, three hundred sixty-five million, three hundred sixty-six thousand, three hundred sixty".