51346531287678 has 32 divisors (see below), whose sum is σ = 114142546403712. Its totient is φ = 15265978426400.

The previous prime is 51346531287643. The next prime is 51346531287683. The reversal of 51346531287678 is 87678213564315.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7339409208 + ... + 7339416203.

It is an arithmetic number, because the mean of its divisors is an integer number (3566954575116).

Almost surely, 2^{51346531287678} is an apocalyptic number.

51346531287678 is an abundant number, since it is smaller than the sum of its proper divisors (62796015116034).

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

51346531287678 is a wasteful number, since it uses less digits than its factorization.

51346531287678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14678825480.

The product of its digits is 203212800, while the sum is 66.

The spelling of 51346531287678 in words is "fifty-one trillion, three hundred forty-six billion, five hundred thirty-one million, two hundred eighty-seven thousand, six hundred seventy-eight".