1001055551085 has 48 divisors (see below), whose sum is σ = 1811760283008. Its totient is φ = 510357513600.

The previous prime is 1001055551077. The next prime is 1001055551129. The reversal of 1001055551085 is 5801555501001.

It is a happy number.

1001055551085 is a `hidden beast` number, since 1 + 0 + 0 + 10 + 5 + 55 + 510 + 85 = 666.

It is not a de Polignac number, because 1001055551085 - 2³ = 1001055551077 is a prime.

It is a super-2 number, since 2×1001055551085² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1318155 + ... + 1933815.

It is an arithmetic number, because the mean of its divisors is an integer number (37745005896).

Almost surely, 2^{1001055551085} is an apocalyptic number.

1001055551085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001055551085 is a deficient number, since it is larger than the sum of its proper divisors (810704731923).

1001055551085 is a wasteful number, since it uses less digits than its factorization.

1001055551085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617266 (or 617263 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 36.

The spelling of 1001055551085 in words is "one trillion, one billion, fifty-five million, five hundred fifty-one thousand, eighty-five".