51481061001215 has 8 divisors (see below), whose sum is σ = 61777515348000. Its totient is φ = 41184687369952.

The previous prime is 51481061001211. The next prime is 51481061001217. The reversal of 51481061001215 is 51210016018415.

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 51481061001215 - 2² = 51481061001211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51481061001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18766715 + ... + 21334284.

It is an arithmetic number, because the mean of its divisors is an integer number (7722189418500).

Almost surely, 2^{51481061001215} is an apocalyptic number.

51481061001215 is a deficient number, since it is larger than the sum of its proper divisors (10296454346785).

51481061001215 is a wasteful number, since it uses less digits than its factorization.

51481061001215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40357761.

The product of its (nonzero) digits is 9600, while the sum is 35.

The spelling of 51481061001215 in words is "fifty-one trillion, four hundred eighty-one billion, sixty-one million, one thousand, two hundred fifteen".