1001155443455 has 8 divisors (see below), whose sum is σ = 1201394834304. Its totient is φ = 800918820000.

The previous prime is 1001155443439. The next prime is 1001155443469. The reversal of 1001155443455 is 5543445511001.

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

It is not a de Polignac number, because 1001155443455 - 2⁴ = 1001155443439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211205 + ... + 1430705.

It is an arithmetic number, because the mean of its divisors is an integer number (150174354288).

Almost surely, 2^{1001155443455} is an apocalyptic number.

1001155443455 is a deficient number, since it is larger than the sum of its proper divisors (200239390849).

1001155443455 is a wasteful number, since it uses less digits than its factorization.

1001155443455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383697.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 1001155443455 in words is "one trillion, one billion, one hundred fifty-five million, four hundred forty-three thousand, four hundred fifty-five".