84446621045 has 24 divisors (see below), whose sum is σ = 102365567640. Its totient is φ = 66877491200.

The previous prime is 84446621041. The next prime is 84446621053. The reversal of 84446621045 is 54012664448.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3413597476 + 81033023569 = 58426^2 + 284663^2 .

It is not a de Polignac number, because 84446621045 - 2² = 84446621041 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84446620987 and 84446621005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84446621041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44703461 + ... + 44705349.

It is an arithmetic number, because the mean of its divisors is an integer number (4265231985).

Almost surely, 2^84446621045 is an apocalyptic number.

It is an amenable number.

84446621045 is a deficient number, since it is larger than the sum of its proper divisors (17918946595).

84446621045 is a wasteful number, since it uses less digits than its factorization.

84446621045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 44.

The spelling of 84446621045 in words is "eighty-four billion, four hundred forty-six million, six hundred twenty-one thousand, forty-five".