8155070641 has 4 divisors (see below), whose sum is σ = 8155837300. Its totient is φ = 8154303984.

The previous prime is 8155070639. The next prime is 8155070653. The reversal of 8155070641 is 1460705518.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3576518416 + 4578552225 = 59804^2 + 67665^2 .

It is a cyclic number.

It is not a de Polignac number, because 8155070641 - 2¹ = 8155070639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8155070641.

It is not an unprimeable number, because it can be changed into a prime (8155070941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367146 + ... + 388723.

It is an arithmetic number, because the mean of its divisors is an integer number (2038959325).

Almost surely, 2^8155070641 is an apocalyptic number.

It is an amenable number.

8155070641 is a deficient number, since it is larger than the sum of its proper divisors (766659).

8155070641 is a wasteful number, since it uses less digits than its factorization.

8155070641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766658.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 8155070641 is about 90305.4297426240. The cubic root of 8155070641 is about 2012.8399449200.

The spelling of 8155070641 in words is "eight billion, one hundred fifty-five million, seventy thousand, six hundred forty-one".