51453532730 has 32 divisors (see below), whose sum is σ = 97664270400. Its totient is φ = 19463507712.

The previous prime is 51453532699. The next prime is 51453532751. The reversal of 51453532730 is 3723535415.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 133535 + ... + 347474.

It is an arithmetic number, because the mean of its divisors is an integer number (3052008450).

Almost surely, 2^51453532730 is an apocalyptic number.

51453532730 is a deficient number, since it is larger than the sum of its proper divisors (46210737670).

51453532730 is a wasteful number, since it uses less digits than its factorization.

51453532730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481598.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 51453532730 in words is "fifty-one billion, four hundred fifty-three million, five hundred thirty-two thousand, seven hundred thirty".