51345003545 has 16 divisors (see below), whose sum is σ = 67395506112. Its totient is φ = 37241693760.

The previous prime is 51345003449. The next prime is 51345003553. The reversal of 51345003545 is 54530054315.

51345003545 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 51345003545 - 2⁸ = 51345003289 is a prime.

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, 1230887 + ... + 1271916.

It is an arithmetic number, because the mean of its divisors is an integer number (4212219132).

Almost surely, 2^51345003545 is an apocalyptic number.

51345003545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51345003545 is a deficient number, since it is larger than the sum of its proper divisors (16050502567).

51345003545 is a wasteful number, since it uses less digits than its factorization.

51345003545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503192.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 51345003545 in words is "fifty-one billion, three hundred forty-five million, three thousand, five hundred forty-five".