51366964100 has 36 divisors (see below), whose sum is σ = 112718762100. Its totient is φ = 20315919360.

The previous prime is 51366964079. The next prime is 51366964109. The reversal of 51366964100 is 146966315.

It can be written as a sum of positive squares in 6 ways, for example, as 8232658756 + 43134305344 = 90734^2 + 207688^2 .

It is not an unprimeable number, because it can be changed into a prime (51366964109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2876885 + ... + 2894684.

It is an arithmetic number, because the mean of its divisors is an integer number (3131076725).

Almost surely, 2^51366964100 is an apocalyptic number.

51366964100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51366964100 is an abundant number, since it is smaller than the sum of its proper divisors (61351798000).

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

51366964100 is a wasteful number, since it uses less digits than its factorization.

51366964100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771672 (or 5771665 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 51366964100 in words is "fifty-one billion, three hundred sixty-six million, nine hundred sixty-four thousand, one hundred".