51064428441 has 16 divisors (see below), whose sum is σ = 73595874240. Its totient is φ = 31307438400.

The previous prime is 51064428439. The next prime is 51064428449. The reversal of 51064428441 is 14482446015.

It is not a de Polignac number, because 51064428441 - 2¹ = 51064428439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51064428441.

It is not an unprimeable number, because it can be changed into a prime (51064428449) 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, 2423235 + ... + 2444216.

It is an arithmetic number, because the mean of its divisors is an integer number (4599742140).

Almost surely, 2^51064428441 is an apocalyptic number.

It is an amenable number.

51064428441 is a deficient number, since it is larger than the sum of its proper divisors (22531445799).

51064428441 is a wasteful number, since it uses less digits than its factorization.

51064428441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867736.

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 51064428441 in words is "fifty-one billion, sixty-four million, four hundred twenty-eight thousand, four hundred forty-one".