1055780607855 has 8 divisors (see below), whose sum is σ = 1689248972592. Its totient is φ = 563082990848.

The previous prime is 1055780607823. The next prime is 1055780607887. The reversal of 1055780607855 is 5587060875501.

It is an interprime number because it is at equal distance from previous prime (1055780607823) and next prime (1055780607887).

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

It is a cyclic number.

It is not a de Polignac number, because 1055780607855 - 2⁵ = 1055780607823 is a prime.

It is a super-2 number, since 2×1055780607855² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055780607795 and 1055780607804.

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, 35192686914 + ... + 35192686943.

It is an arithmetic number, because the mean of its divisors is an integer number (211156121574).

Almost surely, 2^{1055780607855} is an apocalyptic number.

1055780607855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1055780607855 is a deficient number, since it is larger than the sum of its proper divisors (633468364737).

1055780607855 is an equidigital number, since it uses as much as digits as its factorization.

1055780607855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70385373865.

The product of its (nonzero) digits is 11760000, while the sum is 57.

The spelling of 1055780607855 in words is "one trillion, fifty-five billion, seven hundred eighty million, six hundred seven thousand, eight hundred fifty-five".