70638000845 has 16 divisors (see below), whose sum is σ = 84920160240. Its totient is φ = 56407449600.

The previous prime is 70638000841. The next prime is 70638000863. The reversal of 70638000845 is 54800083607.

70638000845 = 187933² + 187934².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1156204009 + 69481796836 = 34003^2 + 263594^2 .

It is not a de Polignac number, because 70638000845 - 2² = 70638000841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70638000841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8737205 + ... + 8745285.

It is an arithmetic number, because the mean of its divisors is an integer number (5307510015).

Almost surely, 2^70638000845 is an apocalyptic number.

70638000845 is the 187934-th centered square number.

It is an amenable number.

70638000845 is a deficient number, since it is larger than the sum of its proper divisors (14282159395).

70638000845 is a wasteful number, since it uses less digits than its factorization.

70638000845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 70638000845 in words is "seventy billion, six hundred thirty-eight million, eight hundred forty-five", and thus it is an aban number.