70210101506661 has 12 divisors (see below), whose sum is σ = 103077125345740. Its totient is φ = 46039410823680.

The previous prime is 70210101506653. The next prime is 70210101506777. The reversal of 70210101506661 is 16660510101207.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3940895958561 + 66269205548100 = 1985169^2 + 8140590^2 .

It is not a de Polignac number, because 70210101506661 - 2³ = 70210101506653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70210101506261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63943625596 + ... + 63943626693.

Almost surely, 2^{70210101506661} is an apocalyptic number.

It is an amenable number.

70210101506661 is a deficient number, since it is larger than the sum of its proper divisors (32867023839079).

70210101506661 is a wasteful number, since it uses less digits than its factorization.

70210101506661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127887252356 (or 127887252353 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

Adding to 70210101506661 its reverse (16660510101207), we get a palindrome (86870611607868).

The spelling of 70210101506661 in words is "seventy trillion, two hundred ten billion, one hundred one million, five hundred six thousand, six hundred sixty-one".