216027658137126 has 128 divisors (see below), whose sum is σ = 477575042660352. Its totient is φ = 64597894400000.

The previous prime is 216027658137013. The next prime is 216027658137149. The reversal of 216027658137126 is 621731856720612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23276329606 + ... + 23276338886.

It is an arithmetic number, because the mean of its divisors is an integer number (3731055020784).

Almost surely, 2^{216027658137126} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216027658137126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238787521330176).

216027658137126 is an abundant number, since it is smaller than the sum of its proper divisors (261547384523226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216027658137126 is a wasteful number, since it uses less digits than its factorization.

216027658137126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13938.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 216027658137126 in words is "two hundred sixteen trillion, twenty-seven billion, six hundred fifty-eight million, one hundred thirty-seven thousand, one hundred twenty-six".