51354354452664 has 64 divisors (see below), whose sum is σ = 128446228310400. Its totient is φ = 17110074473856.

The previous prime is 51354354452543. The next prime is 51354354452671. The reversal of 51354354452664 is 46625445345315.

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, 454652307 + ... + 454765245.

It is an arithmetic number, because the mean of its divisors is an integer number (2006972317350).

Almost surely, 2^{51354354452664} is an apocalyptic number.

It is an amenable number.

51354354452664 is an abundant number, since it is smaller than the sum of its proper divisors (77091873857736).

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

51354354452664 is a wasteful number, since it uses less digits than its factorization.

51354354452664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121684 (or 121680 counting only the distinct ones).

The product of its digits is 103680000, while the sum is 57.

Adding to 51354354452664 its reverse (46625445345315), we get a palindrome (97979799797979).

The spelling of 51354354452664 in words is "fifty-one trillion, three hundred fifty-four billion, three hundred fifty-four million, four hundred fifty-two thousand, six hundred sixty-four".