51552640263 has 8 divisors (see below), whose sum is σ = 68744854000. Its totient is φ = 34364426688.

The previous prime is 51552640247. The next prime is 51552640291. The reversal of 51552640263 is 36204625515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51552640263 - 2⁴ = 51552640247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51552440263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969838 + ... + 1021611.

It is an arithmetic number, because the mean of its divisors is an integer number (8593106750).

Almost surely, 2^51552640263 is an apocalyptic number.

51552640263 is a deficient number, since it is larger than the sum of its proper divisors (17192213737).

51552640263 is a wasteful number, since it uses less digits than its factorization.

51552640263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000081.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 51552640263 in words is "fifty-one billion, five hundred fifty-two million, six hundred forty thousand, two hundred sixty-three".