2106156201616 has 20 divisors (see below), whose sum is σ = 4080719065900. Its totient is φ = 1053067410432.

The previous prime is 2106156201613. The next prime is 2106156201637. The reversal of 2106156201616 is 6161026516012.

It can be written as a sum of positive squares in 2 ways, for example, as 950617200016 + 1155539001600 = 974996^2 + 1074960^2 .

It is a super-2 number, since 2×2106156201616² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2106156201613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098820 + ... + 2328028.

It is an arithmetic number, because the mean of its divisors is an integer number (204035953295).

Almost surely, 2^{2106156201616} is an apocalyptic number.

It is an amenable number.

2106156201616 is a deficient number, since it is larger than the sum of its proper divisors (1974562864284).

2106156201616 is a wasteful number, since it uses less digits than its factorization.

2106156201616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336306 (or 1336300 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 2106156201616 in words is "two trillion, one hundred six billion, one hundred fifty-six million, two hundred one thousand, six hundred sixteen".