51972154846 has 8 divisors (see below), whose sum is σ = 77965851744. Its totient is φ = 25983537600.

The previous prime is 51972154823. The next prime is 51972154847. The reversal of 51972154846 is 64845127915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51972154846² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51972154793 and 51972154802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51972154847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244230 + ... + 1285321.

It is an arithmetic number, because the mean of its divisors is an integer number (9745731468).

Almost surely, 2^51972154846 is an apocalyptic number.

51972154846 is a deficient number, since it is larger than the sum of its proper divisors (25993696898).

51972154846 is a wasteful number, since it uses less digits than its factorization.

51972154846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539826.

The product of its digits is 2419200, while the sum is 52.

The spelling of 51972154846 in words is "fifty-one billion, nine hundred seventy-two million, one hundred fifty-four thousand, eight hundred forty-six".