51447700678750 has 40 divisors (see below), whose sum is σ = 100626334128144. Its totient is φ = 19684337640000.

The previous prime is 51447700678747. The next prime is 51447700678753. The reversal of 51447700678750 is 5787600774415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51447700678747) and next prime (51447700678753).

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51447700678753) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 894713871 + ... + 894771370.

Almost surely, 2^{51447700678750} is an apocalyptic number.

51447700678750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51447700678750 is a deficient number, since it is larger than the sum of its proper divisors (49178633449394).

51447700678750 is a wasteful number, since it uses less digits than its factorization.

51447700678750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789485286 (or 1789485271 counting only the distinct ones).

The product of its (nonzero) digits is 46099200, while the sum is 61.

The spelling of 51447700678750 in words is "fifty-one trillion, four hundred forty-seven billion, seven hundred million, six hundred seventy-eight thousand, seven hundred fifty".