7063745561 has 4 divisors (see below), whose sum is σ = 7074180132. Its totient is φ = 7053310992.

The previous prime is 7063745473. The next prime is 7063745569. The reversal of 7063745561 is 1655473607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1655473607 = 1031 ⋅1605697.

It can be written as a sum of positive squares in 2 ways, for example, as 3521710336 + 3542035225 = 59344^2 + 59515^2 .

It is a cyclic number.

It is not a de Polignac number, because 7063745561 - 2²⁶ = 6996636697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7063745569) 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, 5216270 + ... + 5217623.

It is an arithmetic number, because the mean of its divisors is an integer number (1768545033).

Almost surely, 2^7063745561 is an apocalyptic number.

It is an amenable number.

7063745561 is a deficient number, since it is larger than the sum of its proper divisors (10434571).

7063745561 is a wasteful number, since it uses less digits than its factorization.

7063745561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10434570.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 7063745561 is about 84046.0918841560. The cubic root of 7063745561 is about 1918.7203532914.

The spelling of 7063745561 in words is "seven billion, sixty-three million, seven hundred forty-five thousand, five hundred sixty-one".