1070661515641 has 4 divisors (see below), whose sum is σ = 1071140132772. Its totient is φ = 1070182898512.

The previous prime is 1070661515629. The next prime is 1070661515683. The reversal of 1070661515641 is 1465151660701.

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 647115669225 + 423545846416 = 804435^2 + 650804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1070661515641 - 2¹⁵ = 1070661482873 is a prime.

It is a super-2 number, since 2×1070661515641² (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 (1070661515621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239305210 + ... + 239309683.

It is an arithmetic number, because the mean of its divisors is an integer number (267785033193).

Almost surely, 2^{1070661515641} is an apocalyptic number.

It is an amenable number.

1070661515641 is a deficient number, since it is larger than the sum of its proper divisors (478617131).

1070661515641 is an equidigital number, since it uses as much as digits as its factorization.

1070661515641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478617130.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 1070661515641 in words is "one trillion, seventy billion, six hundred sixty-one million, five hundred fifteen thousand, six hundred forty-one".