60556005005991 has 16 divisors (see below), whose sum is σ = 88088795803008. Its totient is φ = 36697553271200.

The previous prime is 60556005005983. The next prime is 60556005005999. The reversal of 60556005005991 is 19950050065506.

It is an interprime number because it is at equal distance from previous prime (60556005005983) and next prime (60556005005999).

It is a cyclic number.

It is not a de Polignac number, because 60556005005991 - 2³ = 60556005005983 is a prime.

It is a super-3 number, since 3×60556005005991³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60556005005999) 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, 75993216 + ... + 76785941.

It is an arithmetic number, because the mean of its divisors is an integer number (5505549737688).

Almost surely, 2^{60556005005991} is an apocalyptic number.

60556005005991 is a deficient number, since it is larger than the sum of its proper divisors (27532790797017).

60556005005991 is a wasteful number, since it uses less digits than its factorization.

60556005005991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152791182.

The product of its (nonzero) digits is 1822500, while the sum is 51.

The spelling of 60556005005991 in words is "sixty trillion, five hundred fifty-six billion, five million, five thousand, nine hundred ninety-one".