1056105515550 has 48 divisors (see below), whose sum is σ = 2619213453360. Its totient is φ = 281620419840.

The previous prime is 1056105515537. The next prime is 1056105515611. The reversal of 1056105515550 is 555155016501.

It is a super-2 number, since 2×1056105515550² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056105515499 and 1056105515508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7258314 + ... + 7402386.

It is an arithmetic number, because the mean of its divisors is an integer number (54566946945).

Almost surely, 2^{1056105515550} is an apocalyptic number.

1056105515550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1056105515550 is an abundant number, since it is smaller than the sum of its proper divisors (1563107937810).

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

1056105515550 is a wasteful number, since it uses less digits than its factorization.

1056105515550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192957 (or 192952 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 1056105515550 in words is "one trillion, fifty-six billion, one hundred five million, five hundred fifteen thousand, five hundred fifty".