82951389450 has 144 divisors (see below), whose sum is σ = 234096909696. Its totient is φ = 21018096000.

The previous prime is 82951389361. The next prime is 82951389481. The reversal of 82951389450 is 5498315928.

82951389450 is a `hidden beast` number, since 8 + 2 + 9 + 513 + 89 + 45 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1536312 + ... + 1589388.

It is an arithmetic number, because the mean of its divisors is an integer number (1625672984).

Almost surely, 2^82951389450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82951389450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117048454848).

82951389450 is an abundant number, since it is smaller than the sum of its proper divisors (151145520246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82951389450 is a wasteful number, since it uses less digits than its factorization.

82951389450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53269 (or 53261 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 82951389450 in words is "eighty-two billion, nine hundred fifty-one million, three hundred eighty-nine thousand, four hundred fifty".