201620562611 has 8 divisors (see below), whose sum is σ = 217164559920. Its totient is φ = 186081525792.

The previous prime is 201620562607. The next prime is 201620562617. The reversal of 201620562611 is 116265026102.

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 201620562611 - 2² = 201620562607 is a prime.

It is a super-2 number, since 2×201620562611² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201620562617) 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, 1155485 + ... + 1318478.

It is an arithmetic number, because the mean of its divisors is an integer number (27145569990).

Almost surely, 2^201620562611 is an apocalyptic number.

201620562611 is a deficient number, since it is larger than the sum of its proper divisors (15543997309).

201620562611 is a wasteful number, since it uses less digits than its factorization.

201620562611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480245.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 201620562611 its reverse (116265026102), we get a palindrome (317885588713).

The spelling of 201620562611 in words is "two hundred one billion, six hundred twenty million, five hundred sixty-two thousand, six hundred eleven".