51948158063 has 4 divisors (see below), whose sum is σ = 52033740480. Its totient is φ = 51862575648.

The previous prime is 51948158029. The next prime is 51948158117. The reversal of 51948158063 is 36085184915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51948158063 is a prime.

It is a super-2 number, since 2×51948158063² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51948158863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42790298 + ... + 42791511.

It is an arithmetic number, because the mean of its divisors is an integer number (13008435120).

Almost surely, 2^51948158063 is an apocalyptic number.

51948158063 is a deficient number, since it is larger than the sum of its proper divisors (85582417).

51948158063 is an equidigital number, since it uses as much as digits as its factorization.

51948158063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85582416.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 51948158063 in words is "fifty-one billion, nine hundred forty-eight million, one hundred fifty-eight thousand, sixty-three".