51716738340 has 72 divisors (see below), whose sum is σ = 156897336960. Its totient is φ = 13789088064.

The previous prime is 51716738327. The next prime is 51716738341. The reversal of 51716738340 is 4383761715.

51716738340 is a `hidden beast` number, since 5 + 171 + 67 + 383 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (51716738341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1498357 + ... + 1532483.

It is an arithmetic number, because the mean of its divisors is an integer number (2179129680).

Almost surely, 2^51716738340 is an apocalyptic number.

It is an amenable number.

51716738340 is an abundant number, since it is smaller than the sum of its proper divisors (105180598620).

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

51716738340 is a wasteful number, since it uses less digits than its factorization.

51716738340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42561 (or 42556 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 51716738340 in words is "fifty-one billion, seven hundred sixteen million, seven hundred thirty-eight thousand, three hundred forty".