81828948370 has 64 divisors (see below), whose sum is σ = 161338173696. Its totient is φ = 29697166080.

The previous prime is 81828948347. The next prime is 81828948371. The reversal of 81828948370 is 7384982818.

It is not an unprimeable number, because it can be changed into a prime (81828948371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14802547 + ... + 14808073.

It is an arithmetic number, because the mean of its divisors is an integer number (2520908964).

Almost surely, 2^81828948370 is an apocalyptic number.

81828948370 is a deficient number, since it is larger than the sum of its proper divisors (79509225326).

81828948370 is a wasteful number, since it uses less digits than its factorization.

81828948370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 81828948370 in words is "eighty-one billion, eight hundred twenty-eight million, nine hundred forty-eight thousand, three hundred seventy".