84145691450 has 24 divisors (see below), whose sum is σ = 156522160512. Its totient is φ = 33655873520.

The previous prime is 84145691437. The next prime is 84145691453. The reversal of 84145691450 is 5419654148.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84145691395 and 84145691404.

It is not an unprimeable number, because it can be changed into a prime (84145691453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 757367 + ... + 861333.

It is an arithmetic number, because the mean of its divisors is an integer number (6521756688).

Almost surely, 2^84145691450 is an apocalyptic number.

84145691450 is a deficient number, since it is larger than the sum of its proper divisors (72376469062).

84145691450 is a wasteful number, since it uses less digits than its factorization.

84145691450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120166 (or 120161 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 84145691450 in words is "eighty-four billion, one hundred forty-five million, six hundred ninety-one thousand, four hundred fifty".