1017807901155 has 48 divisors (see below), whose sum is σ = 1813948849440. Its totient is φ = 527622105600.

The previous prime is 1017807901141. The next prime is 1017807901177. The reversal of 1017807901155 is 5511097087101.

1017807901155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1017807901155 - 2⁸ = 1017807900899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1017807901155.

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, 529081 + ... + 1521690.

It is an arithmetic number, because the mean of its divisors is an integer number (37790601030).

Almost surely, 2^{1017807901155} is an apocalyptic number.

1017807901155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1017807901155 is a deficient number, since it is larger than the sum of its proper divisors (796140948285).

1017807901155 is a wasteful number, since it uses less digits than its factorization.

1017807901155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051092 (or 2051089 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 45.

The spelling of 1017807901155 in words is "one trillion, seventeen billion, eight hundred seven million, nine hundred one thousand, one hundred fifty-five".