51144733690 has 16 divisors (see below), whose sum is σ = 92174050080. Its totient is φ = 20432664720.

The previous prime is 51144733639. The next prime is 51144733697. The reversal of 51144733690 is 9633744115.

It is a super-2 number, since 2×51144733690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51144733697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3145080 + ... + 3161299.

It is an arithmetic number, because the mean of its divisors is an integer number (5760878130).

Almost surely, 2^51144733690 is an apocalyptic number.

51144733690 is a deficient number, since it is larger than the sum of its proper divisors (41029316390).

51144733690 is a wasteful number, since it uses less digits than its factorization.

51144733690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6307197.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 51144733690 in words is "fifty-one billion, one hundred forty-four million, seven hundred thirty-three thousand, six hundred ninety".