51520453570 has 32 divisors (see below), whose sum is σ = 93831913728. Its totient is φ = 20366255808.

The previous prime is 51520453559. The next prime is 51520453573. The reversal of 51520453570 is 7535402515.

It is not an unprimeable number, because it can be changed into a prime (51520453573) 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, 199747 + ... + 378073.

It is an arithmetic number, because the mean of its divisors is an integer number (2932247304).

Almost surely, 2^51520453570 is an apocalyptic number.

51520453570 is a deficient number, since it is larger than the sum of its proper divisors (42311460158).

51520453570 is a wasteful number, since it uses less digits than its factorization.

51520453570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178674.

The product of its (nonzero) digits is 105000, while the sum is 37.

The spelling of 51520453570 in words is "fifty-one billion, five hundred twenty million, four hundred fifty-three thousand, five hundred seventy".