51151231115545 has 64 divisors (see below), whose sum is σ = 69304250695680. Its totient is φ = 35921300083200.

The previous prime is 51151231115531. The next prime is 51151231115549. The reversal of 51151231115545 is 54551113215115.

51151231115545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51151231115545 - 2¹⁷ = 51151230984473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51151231115498 and 51151231115507.

It is not an unprimeable number, because it can be changed into a prime (51151231115549) 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 63 ways as a sum of consecutive naturals, for example, 84096726 + ... + 84702784.

It is an arithmetic number, because the mean of its divisors is an integer number (1082878917120).

Almost surely, 2^{51151231115545} is an apocalyptic number.

51151231115545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51151231115545 is a deficient number, since it is larger than the sum of its proper divisors (18153019580135).

51151231115545 is a wasteful number, since it uses less digits than its factorization.

51151231115545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606526.

The product of its digits is 75000, while the sum is 40.

The spelling of 51151231115545 in words is "fifty-one trillion, one hundred fifty-one billion, two hundred thirty-one million, one hundred fifteen thousand, five hundred forty-five".