616001221871 has 8 divisors (see below), whose sum is σ = 704176248960. Its totient is φ = 527869907928.

The previous prime is 616001221831. The next prime is 616001221909. The reversal of 616001221871 is 178122100616.

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 616001221871 - 2¹⁸ = 616000959727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616001221831) 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, 10898081 + ... + 10954458.

It is an arithmetic number, because the mean of its divisors is an integer number (88022031120).

Almost surely, 2^616001221871 is an apocalyptic number.

616001221871 is a deficient number, since it is larger than the sum of its proper divisors (88175027089).

616001221871 is a wasteful number, since it uses less digits than its factorization.

616001221871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21856573.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 616001221871 in words is "six hundred sixteen billion, one million, two hundred twenty-one thousand, eight hundred seventy-one".