1011143304555 has 32 divisors (see below), whose sum is σ = 1720347729984. Its totient is φ = 505375911936.

The previous prime is 1011143304541. The next prime is 1011143304569. The reversal of 1011143304555 is 5554033411101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1011143304541) and next prime (1011143304569).

It is not a de Polignac number, because 1011143304555 - 2⁶ = 1011143304491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8449744 + ... + 8568573.

It is an arithmetic number, because the mean of its divisors is an integer number (53760866562).

Almost surely, 2^{1011143304555} is an apocalyptic number.

1011143304555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011143304555 is a deficient number, since it is larger than the sum of its proper divisors (709204425429).

1011143304555 is a wasteful number, since it uses less digits than its factorization.

1011143304555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17018575.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 1011143304555 its reverse (5554033411101), we get a palindrome (6565176715656).

The spelling of 1011143304555 in words is "one trillion, eleven billion, one hundred forty-three million, three hundred four thousand, five hundred fifty-five".