8155261554645 has 16 divisors (see below), whose sum is σ = 13110259338432. Its totient is φ = 4328859212160.

The previous prime is 8155261554617. The next prime is 8155261554673. The reversal of 8155261554645 is 5464551625518.

It is an interprime number because it is at equal distance from previous prime (8155261554617) and next prime (8155261554673).

It is not a de Polignac number, because 8155261554645 - 2⁸ = 8155261554389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288347792 + ... + 1288354121.

It is an arithmetic number, because the mean of its divisors is an integer number (819391208652).

Almost surely, 2^{8155261554645} is an apocalyptic number.

It is an amenable number.

8155261554645 is a deficient number, since it is larger than the sum of its proper divisors (4954997783787).

8155261554645 is a wasteful number, since it uses less digits than its factorization.

8155261554645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576702132.

The product of its digits is 28800000, while the sum is 57.

The spelling of 8155261554645 in words is "eight trillion, one hundred fifty-five billion, two hundred sixty-one million, five hundred fifty-four thousand, six hundred forty-five".