51870666172153 has 4 divisors (see below), whose sum is σ = 54125912527488. Its totient is φ = 49615419816820.

The previous prime is 51870666172151. The next prime is 51870666172163. The reversal of 51870666172153 is 35127166607815.

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 not a de Polignac number, because 51870666172153 - 2¹ = 51870666172151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51870666172151) 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, 1127623177633 + ... + 1127623177678.

It is an arithmetic number, because the mean of its divisors is an integer number (13531478131872).

Almost surely, 2^{51870666172153} is an apocalyptic number.

It is an amenable number.

51870666172153 is a deficient number, since it is larger than the sum of its proper divisors (2255246355335).

51870666172153 is a wasteful number, since it uses less digits than its factorization.

51870666172153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255246355334.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 51870666172153 in words is "fifty-one trillion, eight hundred seventy billion, six hundred sixty-six million, one hundred seventy-two thousand, one hundred fifty-three".