51703878681408 has 56 divisors (see below), whose sum is σ = 136801238378688. Its totient is φ = 17234450768896.

The previous prime is 51703878681401. The next prime is 51703878681419. The reversal of 51703878681408 is 80418687830715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51703878681401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18268660 + ... + 20908172.

Almost surely, 2^{51703878681408} is an apocalyptic number.

It is an amenable number.

51703878681408 is an abundant number, since it is smaller than the sum of its proper divisors (85097359697280).

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

51703878681408 is a wasteful number, since it uses less digits than its factorization.

51703878681408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741551 (or 2741541 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 66.

The spelling of 51703878681408 in words is "fifty-one trillion, seven hundred three billion, eight hundred seventy-eight million, six hundred eighty-one thousand, four hundred eight".