1855003078656 has 520 divisors, whose sum is σ = 6820334310944. Its totient is φ = 489223618560.

The previous prime is 1855003078651. The next prime is 1855003078661. The reversal of 1855003078656 is 6568703005581.

1855003078656 is a `hidden beast` number, since 1 + 8 + 5 + 500 + 3 + 0 + 7 + 86 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (1855003078651) and next prime (1855003078661).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1855003078651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30160896 + ... + 30222336.

Almost surely, 2^{1855003078656} is an apocalyptic number.

1855003078656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1855003078656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3410167155472).

1855003078656 is an abundant number, since it is smaller than the sum of its proper divisors (4965331232288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1855003078656 is an equidigital number, since it uses as much as digits as its factorization.

1855003078656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61497 (or 61466 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 1855003078656 in words is "one trillion, eight hundred fifty-five billion, three million, seventy-eight thousand, six hundred fifty-six".