51438453138055 has 8 divisors (see below), whose sum is σ = 61737005341872. Its totient is φ = 41143521459648.

The previous prime is 51438453138013. The next prime is 51438453138131. The reversal of 51438453138055 is 55083135483415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51438453138055 is a prime.

It is a super-2 number, since 2×51438453138055² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51438453137987 and 51438453138005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905100094 + ... + 905156923.

It is an arithmetic number, because the mean of its divisors is an integer number (7717125667734).

Almost surely, 2^{51438453138055} is an apocalyptic number.

51438453138055 is a deficient number, since it is larger than the sum of its proper divisors (10298552203817).

51438453138055 is a wasteful number, since it uses less digits than its factorization.

51438453138055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810262705.

The product of its (nonzero) digits is 17280000, while the sum is 55.

The spelling of 51438453138055 in words is "fifty-one trillion, four hundred thirty-eight billion, four hundred fifty-three million, one hundred thirty-eight thousand, fifty-five".