51898949153 has 4 divisors (see below), whose sum is σ = 51900358848. Its totient is φ = 51897539460.

The previous prime is 51898949129. The next prime is 51898949159. The reversal of 51898949153 is 35194989815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51898949153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51898949159) 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, 648101 + ... + 723762.

It is an arithmetic number, because the mean of its divisors is an integer number (12975089712).

Almost surely, 2^51898949153 is an apocalyptic number.

It is an amenable number.

51898949153 is a deficient number, since it is larger than the sum of its proper divisors (1409695).

51898949153 is a wasteful number, since it uses less digits than its factorization.

51898949153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409694.

The product of its digits is 13996800, while the sum is 62.

The spelling of 51898949153 in words is "fifty-one billion, eight hundred ninety-eight million, nine hundred forty-nine thousand, one hundred fifty-three".