216703376006457 has 32 divisors (see below), whose sum is σ = 297626964253696. Its totient is φ = 140169190392000.

The previous prime is 216703376006441. The next prime is 216703376006473. The reversal of 216703376006457 is 754600673307612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (216703376006441) and next prime (216703376006473).

It is not a de Polignac number, because 216703376006457 - 2⁴ = 216703376006441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216703376006397 and 216703376006406.

It is not an unprimeable number, because it can be changed into a prime (216703376006657) 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 31 ways as a sum of consecutive naturals, for example, 530657082 + ... + 531065292.

It is an arithmetic number, because the mean of its divisors is an integer number (9300842632928).

Almost surely, 2^{216703376006457} is an apocalyptic number.

It is an amenable number.

216703376006457 is a deficient number, since it is larger than the sum of its proper divisors (80923588247239).

216703376006457 is a wasteful number, since it uses less digits than its factorization.

216703376006457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435661.

The product of its (nonzero) digits is 26671680, while the sum is 57.

The spelling of 216703376006457 in words is "two hundred sixteen trillion, seven hundred three billion, three hundred seventy-six million, six thousand, four hundred fifty-seven".