51920963259 has 8 divisors (see below), whose sum is σ = 75521401152.
Its totient is φ = 31467250440.
The previous prime is 51920963251. The next prime is 51920963267. The reversal of 51920963259 is 95236902915.
It is an interprime number because it is at equal distance from previous prime (51920963251) and next prime (51920963267).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 51920963259 - 23 = 51920963251 is a prime.
It is not an unprimeable number, because it can be changed into a prime (51920963251) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786681229 + ... + 786681294.
It is an arithmetic number, because the mean of its divisors is an integer number (9440175144).
Almost surely, 251920963259 is an apocalyptic number.
51920963259 is a deficient number, since it is larger than the sum of its proper divisors (23600437893).
51920963259 is a wasteful number, since it uses less digits than its factorization.
51920963259 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1573362537.
The product of its (nonzero) digits is 1312200, while the sum is 51.
The spelling of 51920963259 in words is "fifty-one billion, nine hundred twenty million, nine hundred sixty-three thousand, two hundred fifty-nine".