1011055604991 has 8 divisors (see below), whose sum is σ = 1394559455280. Its totient is φ = 650794412352.

The previous prime is 1011055604971. The next prime is 1011055605011. The reversal of 1011055604991 is 1994065501101.

It is an interprime number because it is at equal distance from previous prime (1011055604971) and next prime (1011055605011).

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

It is not a de Polignac number, because 1011055604991 - 2⁵ = 1011055604959 is a prime.

It is a super-2 number, since 2×1011055604991² (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 (1011055604971) 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, 5810664310 + ... + 5810664483.

It is an arithmetic number, because the mean of its divisors is an integer number (174319931910).

Almost surely, 2^{1011055604991} is an apocalyptic number.

1011055604991 is a deficient number, since it is larger than the sum of its proper divisors (383503850289).

1011055604991 is a wasteful number, since it uses less digits than its factorization.

1011055604991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621328825.

The product of its (nonzero) digits is 48600, while the sum is 42.

The spelling of 1011055604991 in words is "one trillion, eleven billion, fifty-five million, six hundred four thousand, nine hundred ninety-one".