1060505105991 has 8 divisors (see below), whose sum is σ = 1414305834480. Its totient is φ = 706853890752.

The previous prime is 1060505105987. The next prime is 1060505105993. The reversal of 1060505105991 is 1995015050601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1060505105991 - 2² = 1060505105987 is a prime.

It is a super-2 number, since 2×1060505105991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1060505105993) 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, 37361760 + ... + 37390133.

It is an arithmetic number, because the mean of its divisors is an integer number (176788229310).

Almost surely, 2^{1060505105991} is an apocalyptic number.

1060505105991 is a deficient number, since it is larger than the sum of its proper divisors (353800728489).

1060505105991 is an equidigital number, since it uses as much as digits as its factorization.

1060505105991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74756625.

The product of its (nonzero) digits is 60750, while the sum is 42.

The spelling of 1060505105991 in words is "one trillion, sixty billion, five hundred five million, one hundred five thousand, nine hundred ninety-one".