85642620001 has 2 divisors, whose sum is σ = 85642620002. Its totient is φ = 85642620000.

The previous prime is 85642619999. The next prime is 85642620079. The reversal of 85642620001 is 10002624658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76660319376 + 8982300625 = 276876^2 + 94775^2 .

It is a cyclic number.

It is not a de Polignac number, because 85642620001 - 2¹ = 85642619999 is a prime.

Together with 85642619999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85642620601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42821310000 + 42821310001.

It is an arithmetic number, because the mean of its divisors is an integer number (42821310001).

Almost surely, 2^85642620001 is an apocalyptic number.

It is an amenable number.

85642620001 is a deficient number, since it is larger than the sum of its proper divisors (1).

85642620001 is an equidigital number, since it uses as much as digits as its factorization.

85642620001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 85642620001 in words is "eighty-five billion, six hundred forty-two million, six hundred twenty thousand, one".