51487846161 has 16 divisors (see below), whose sum is σ = 75849105024. Its totient is φ = 30901485824.

The previous prime is 51487846147. The next prime is 51487846169. The reversal of 51487846161 is 16164878415.

It is a cyclic number.

It is not a de Polignac number, because 51487846161 - 2⁵ = 51487846129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (51487846169) 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, 21945906 + ... + 21948251.

It is an arithmetic number, because the mean of its divisors is an integer number (4740569064).

Almost surely, 2^51487846161 is an apocalyptic number.

51487846161 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51487846161 is a deficient number, since it is larger than the sum of its proper divisors (24361258863).

51487846161 is a wasteful number, since it uses less digits than its factorization.

51487846161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43894200.

The product of its digits is 1290240, while the sum is 51.

The spelling of 51487846161 in words is "fifty-one billion, four hundred eighty-seven million, eight hundred forty-six thousand, one hundred sixty-one".