1078577890155 has 64 divisors (see below), whose sum is σ = 1960298081280. Its totient is φ = 562519026432.

The previous prime is 1078577890129. The next prime is 1078577890219. The reversal of 1078577890155 is 5510987758701.

1078577890155 is a `hidden beast` number, since 1 + 0 + 7 + 8 + 577 + 8 + 9 + 0 + 1 + 55 = 666.

It is not a de Polignac number, because 1078577890155 - 2²⁰ = 1078576841579 is a prime.

It is a super-2 number, since 2×1078577890155² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1078577890092 and 1078577890101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 803962 + ... + 1674368.

It is an arithmetic number, because the mean of its divisors is an integer number (30629657520).

Almost surely, 2^{1078577890155} is an apocalyptic number.

1078577890155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1078577890155 is a deficient number, since it is larger than the sum of its proper divisors (881720191125).

1078577890155 is a wasteful number, since it uses less digits than its factorization.

1078577890155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870625 (or 870619 counting only the distinct ones).

The product of its (nonzero) digits is 24696000, while the sum is 63.

The spelling of 1078577890155 in words is "one trillion, seventy-eight billion, five hundred seventy-seven million, eight hundred ninety thousand, one hundred fifty-five".