51021112445 has 16 divisors (see below), whose sum is σ = 65048358960. Its totient is φ = 38344287744.

The previous prime is 51021112427. The next prime is 51021112459. The reversal of 51021112445 is 54421112015.

It is a happy number.

51021112445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 6945888964 + 44075223481 = 83342^2 + 209941^2 .

It is a cyclic number.

It is not a de Polignac number, because 51021112445 - 2¹² = 51021108349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749632 + ... + 4760361.

It is an arithmetic number, because the mean of its divisors is an integer number (4065522435).

Almost surely, 2^51021112445 is an apocalyptic number.

It is an amenable number.

51021112445 is a deficient number, since it is larger than the sum of its proper divisors (14027246515).

51021112445 is a wasteful number, since it uses less digits than its factorization.

51021112445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510064.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 51021112445 in words is "fifty-one billion, twenty-one million, one hundred twelve thousand, four hundred forty-five".