1056621602099 has 8 divisors (see below), whose sum is σ = 1207904789088. Its totient is φ = 905422726080.

The previous prime is 1056621602083. The next prime is 1056621602117. The reversal of 1056621602099 is 9902061266501.

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 1056621602099 - 2⁴ = 1056621602083 is a prime.

It is a super-2 number, since 2×1056621602099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056621602059) 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 7 ways as a sum of consecutive naturals, for example, 21050882 + ... + 21101015.

It is an arithmetic number, because the mean of its divisors is an integer number (150988098636).

Almost surely, 2^{1056621602099} is an apocalyptic number.

1056621602099 is a deficient number, since it is larger than the sum of its proper divisors (151283186989).

1056621602099 is an equidigital number, since it uses as much as digits as its factorization.

1056621602099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42155485.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 1056621602099 in words is "one trillion, fifty-six billion, six hundred twenty-one million, six hundred two thousand, ninety-nine".