70100555561 has 4 divisors (see below), whose sum is σ = 70101412224. Its totient is φ = 70099698900.

The previous prime is 70100555509. The next prime is 70100555617. The reversal of 70100555561 is 16555500107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70100555561 - 2²⁶ = 70033446697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70100555501) 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, 290885 + ... + 474146.

It is an arithmetic number, because the mean of its divisors is an integer number (17525353056).

Almost surely, 2^70100555561 is an apocalyptic number.

It is an amenable number.

70100555561 is a deficient number, since it is larger than the sum of its proper divisors (856663).

70100555561 is an equidigital number, since it uses as much as digits as its factorization.

70100555561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856662.

The product of its (nonzero) digits is 26250, while the sum is 35.

The spelling of 70100555561 in words is "seventy billion, one hundred million, five hundred fifty-five thousand, five hundred sixty-one".