70671651553 has 4 divisors (see below), whose sum is σ = 70700893380. Its totient is φ = 70642409728.

The previous prime is 70671651551. The next prime is 70671651559. The reversal of 70671651553 is 35515617607.

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 30033929809 + 40637721744 = 173303^2 + 201588^2 .

It is a cyclic number.

It is not a de Polignac number, because 70671651553 - 2¹ = 70671651551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70671651551) 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, 14617288 + ... + 14622121.

It is an arithmetic number, because the mean of its divisors is an integer number (17675223345).

Almost surely, 2^70671651553 is an apocalyptic number.

It is an amenable number.

70671651553 is a deficient number, since it is larger than the sum of its proper divisors (29241827).

70671651553 is a wasteful number, since it uses less digits than its factorization.

70671651553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29241826.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 70671651553 in words is "seventy billion, six hundred seventy-one million, six hundred fifty-one thousand, five hundred fifty-three".