51135027700 has 18 divisors (see below), whose sum is σ = 110963010326. Its totient is φ = 20454011040.

The previous prime is 51135027673. The next prime is 51135027707. The reversal of 51135027700 is 772053115.

It can be written as a sum of positive squares in 3 ways, for example, as 364122724 + 50770904976 = 19082^2 + 225324^2 .

It is a super-2 number, since 2×51135027700² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51135027707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255675039 + ... + 255675238.

Almost surely, 2^51135027700 is an apocalyptic number.

51135027700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51135027700 is an abundant number, since it is smaller than the sum of its proper divisors (59827982626).

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

51135027700 is a wasteful number, since it uses less digits than its factorization.

51135027700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511350291 (or 511350284 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The spelling of 51135027700 in words is "fifty-one billion, one hundred thirty-five million, twenty-seven thousand, seven hundred".