51061375605408 has 96 divisors (see below), whose sum is σ = 153185379088896. Its totient is φ = 14588845195008.

The previous prime is 51061375605407. The next prime is 51061375605419. The reversal of 51061375605408 is 80450657316015.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (51061375605407) 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, 112321735 + ... + 112775417.

It is an arithmetic number, because the mean of its divisors is an integer number (1595681032176).

Almost surely, 2^{51061375605408} is an apocalyptic number.

It is an amenable number.

51061375605408 is an abundant number, since it is smaller than the sum of its proper divisors (102124003483488).

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

51061375605408 is a wasteful number, since it uses less digits than its factorization.

51061375605408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621186 (or 621178 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 51061375605408 in words is "fifty-one trillion, sixty-one billion, three hundred seventy-five million, six hundred five thousand, four hundred eight".