70561671737 has 8 divisors (see below), whose sum is σ = 71725240392. Its totient is φ = 69398323200.

The previous prime is 70561671701. The next prime is 70561671793. The reversal of 70561671737 is 73717616507.

It can be written as a sum of positive squares in 4 ways, for example, as 261921856 + 70299749881 = 16184^2 + 265141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70561671737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70561671937) 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, 669287 + ... + 767507.

It is an arithmetic number, because the mean of its divisors is an integer number (8965655049).

Almost surely, 2^70561671737 is an apocalyptic number.

It is an amenable number.

70561671737 is a deficient number, since it is larger than the sum of its proper divisors (1163568655).

70561671737 is a wasteful number, since it uses less digits than its factorization.

70561671737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110059.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 70561671737 in words is "seventy billion, five hundred sixty-one million, six hundred seventy-one thousand, seven hundred thirty-seven".