51637421366 has 8 divisors (see below), whose sum is σ = 77458457520. Its totient is φ = 25817935528.

The previous prime is 51637421351. The next prime is 51637421393. The reversal of 51637421366 is 66312473615.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300386 + ... + 439893.

It is an arithmetic number, because the mean of its divisors is an integer number (9682307190).

Almost surely, 2^51637421366 is an apocalyptic number.

51637421366 is a deficient number, since it is larger than the sum of its proper divisors (25821036154).

51637421366 is a wasteful number, since it uses less digits than its factorization.

51637421366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775158.

The product of its digits is 544320, while the sum is 44.

The spelling of 51637421366 in words is "fifty-one billion, six hundred thirty-seven million, four hundred twenty-one thousand, three hundred sixty-six".