51222163568015 has 16 divisors (see below), whose sum is σ = 70583651233920. Its totient is φ = 35291825615520.

The previous prime is 51222163568011. The next prime is 51222163568027. The reversal of 51222163568015 is 51086536122215.

It is not a de Polignac number, because 51222163568015 - 2² = 51222163568011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222163568011) 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, 24508211189 + ... + 24508213278.

It is an arithmetic number, because the mean of its divisors is an integer number (4411478202120).

Almost surely, 2^{51222163568015} is an apocalyptic number.

51222163568015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51222163568015 is a deficient number, since it is larger than the sum of its proper divisors (19361487665905).

51222163568015 is a wasteful number, since it uses less digits than its factorization.

51222163568015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49016424502.

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 51222163568015 in words is "fifty-one trillion, two hundred twenty-two billion, one hundred sixty-three million, five hundred sixty-eight thousand, fifteen".