51454108216 has 64 divisors (see below), whose sum is σ = 117900722880. Its totient is φ = 20549068800.

The previous prime is 51454108213. The next prime is 51454108217. The reversal of 51454108216 is 61280145415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51454108213) 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, 171415 + ... + 363718.

It is an arithmetic number, because the mean of its divisors is an integer number (1842198795).

Almost surely, 2^51454108216 is an apocalyptic number.

51454108216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51454108216 is an abundant number, since it is smaller than the sum of its proper divisors (66446614664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51454108216 is a wasteful number, since it uses less digits than its factorization.

51454108216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535264 (or 535260 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 51454108216 in words is "fifty-one billion, four hundred fifty-four million, one hundred eight thousand, two hundred sixteen".