616021311011 has 4 divisors (see below), whose sum is σ = 616025431224. Its totient is φ = 616017190800.

The previous prime is 616021310987. The next prime is 616021311023. The reversal of 616021311011 is 110113120616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616021311011 is a prime.

It is a super-2 number, since 2×616021311011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616021311091) 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, 1827050 + ... + 2137791.

It is an arithmetic number, because the mean of its divisors is an integer number (154006357806).

Almost surely, 2^616021311011 is an apocalyptic number.

616021311011 is a deficient number, since it is larger than the sum of its proper divisors (4120213).

616021311011 is a wasteful number, since it uses less digits than its factorization.

616021311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120212.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 616021311011 its reverse (110113120616), we get a palindrome (726134431627).

The spelling of 616021311011 in words is "six hundred sixteen billion, twenty-one million, three hundred eleven thousand, eleven".