21516414123737 has 8 divisors (see below), whose sum is σ = 23247000180096. Its totient is φ = 19796610535632.

The previous prime is 21516414123707. The next prime is 21516414123749. The reversal of 21516414123737 is 73732141461512.

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 21516414123737 - 2¹⁰ = 21516414122713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21516414123691 and 21516414123700.

It is not an unprimeable number, because it can be changed into a prime (21516414123707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695612913 + ... + 2695620894.

It is an arithmetic number, because the mean of its divisors is an integer number (2905875022512).

Almost surely, 2^{21516414123737} is an apocalyptic number.

It is an amenable number.

21516414123737 is a deficient number, since it is larger than the sum of its proper divisors (1730586056359).

21516414123737 is a wasteful number, since it uses less digits than its factorization.

21516414123737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391234127.

The product of its digits is 846720, while the sum is 47.

The spelling of 21516414123737 in words is "twenty-one trillion, five hundred sixteen billion, four hundred fourteen million, one hundred twenty-three thousand, seven hundred thirty-seven".