51216663143461 has 8 divisors (see below), whose sum is σ = 51364990258560. Its totient is φ = 51068340216768.

The previous prime is 51216663143453. The next prime is 51216663143467. The reversal of 51216663143461 is 16434136661215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51216663143461 - 2³ = 51216663143453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51216663143467) 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, 24334125 + ... + 26354941.

It is an arithmetic number, because the mean of its divisors is an integer number (6420623782320).

Almost surely, 2^{51216663143461} is an apocalyptic number.

It is an amenable number.

51216663143461 is a deficient number, since it is larger than the sum of its proper divisors (148327115099).

51216663143461 is a wasteful number, since it uses less digits than its factorization.

51216663143461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094203.

The product of its digits is 1866240, while the sum is 49.

The spelling of 51216663143461 in words is "fifty-one trillion, two hundred sixteen billion, six hundred sixty-three million, one hundred forty-three thousand, four hundred sixty-one".