51109757228078 has 32 divisors (see below), whose sum is σ = 83201579453088. Its totient is φ = 23458089600000.

The previous prime is 51109757228071. The next prime is 51109757228093. The reversal of 51109757228078 is 87082275790115.

It is a super-2 number, since 2×51109757228078² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51109757228078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51109757228071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110840423 + ... + 111300578.

It is an arithmetic number, because the mean of its divisors is an integer number (2600049357909).

Almost surely, 2^{51109757228078} is an apocalyptic number.

51109757228078 is a deficient number, since it is larger than the sum of its proper divisors (32091822225010).

51109757228078 is a wasteful number, since it uses less digits than its factorization.

51109757228078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222141188.

The product of its (nonzero) digits is 19756800, while the sum is 62.

The spelling of 51109757228078 in words is "fifty-one trillion, one hundred nine billion, seven hundred fifty-seven million, two hundred twenty-eight thousand, seventy-eight".