51294477449215 has 256 divisors, whose sum is σ = 91520728104960. Its totient is φ = 26511068897280.

The previous prime is 51294477449213. The next prime is 51294477449297.

51294477449215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51294477449215 - 2¹ = 51294477449213 is a prime.

It is a super-2 number, since 2×51294477449215² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51294477449213) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 859073392 + ... + 859133098.

It is an arithmetic number, because the mean of its divisors is an integer number (357502844160).

Almost surely, 2^{51294477449215} is an apocalyptic number.

51294477449215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51294477449215 is a deficient number, since it is larger than the sum of its proper divisors (40226250655745).

51294477449215 is a wasteful number, since it uses less digits than its factorization.

51294477449215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60222.

The product of its digits is 101606400, while the sum is 64.

The spelling of 51294477449215 in words is "fifty-one trillion, two hundred ninety-four billion, four hundred seventy-seven million, four hundred forty-nine thousand, two hundred fifteen".