85444994002 has 4 divisors (see below), whose sum is σ = 128167491006. Its totient is φ = 42722497000.

The previous prime is 85444993973. The next prime is 85444994003. The reversal of 85444994002 is 20049944458.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62334609561 + 23110384441 = 249669^2 + 152021^2 .

It is not an unprimeable number, because it can be changed into a prime (85444994003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361248499 + ... + 21361248502.

Almost surely, 2^85444994002 is an apocalyptic number.

85444994002 is a deficient number, since it is larger than the sum of its proper divisors (42722497004).

85444994002 is a wasteful number, since it uses less digits than its factorization.

85444994002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42722497003.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 85444994002 in words is "eighty-five billion, four hundred forty-four million, nine hundred ninety-four thousand, two".