1081721804350 has 96 divisors (see below), whose sum is σ = 2201264574336. Its totient is φ = 392216822400.

The previous prime is 1081721804249. The next prime is 1081721804399. The reversal of 1081721804350 is 534081271801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337719849 + ... + 337723051.

It is an arithmetic number, because the mean of its divisors is an integer number (22929839316).

Almost surely, 2^{1081721804350} is an apocalyptic number.

1081721804350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081721804350 is an abundant number, since it is smaller than the sum of its proper divisors (1119542769986).

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

1081721804350 is a wasteful number, since it uses less digits than its factorization.

1081721804350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810 (or 4805 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 1081721804350 in words is "one trillion, eighty-one billion, seven hundred twenty-one million, eight hundred four thousand, three hundred fifty".