216105061501 has 16 divisors (see below), whose sum is σ = 247355596800. Its totient is φ = 184949292528.

The previous prime is 216105061499. The next prime is 216105061507. The reversal of 216105061501 is 105160501612.

It is a happy number.

It is not a de Polignac number, because 216105061501 - 2¹ = 216105061499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216105061501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216105061507) 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, 22461670 + ... + 22471288.

It is an arithmetic number, because the mean of its divisors is an integer number (15459724800).

Almost surely, 2^216105061501 is an apocalyptic number.

It is an amenable number.

216105061501 is a deficient number, since it is larger than the sum of its proper divisors (31250535299).

216105061501 is an equidigital number, since it uses as much as digits as its factorization.

216105061501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14208.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 216105061501 in words is "two hundred sixteen billion, one hundred five million, sixty-one thousand, five hundred one".