1641520356450 has 192 divisors, whose sum is σ = 4400024547072. Its totient is φ = 402603955200.

The previous prime is 1641520356449. The next prime is 1641520356529. The reversal of 1641520356450 is 546530251461.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 969591804 + ... + 969593496.

It is an arithmetic number, because the mean of its divisors is an integer number (22916794516).

Almost surely, 2^{1641520356450} is an apocalyptic number.

1641520356450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641520356450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2200012273536).

1641520356450 is an abundant number, since it is smaller than the sum of its proper divisors (2758504190622).

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

1641520356450 is a wasteful number, since it uses less digits than its factorization.

1641520356450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 1641520356450 in words is "one trillion, six hundred forty-one billion, five hundred twenty million, three hundred fifty-six thousand, four hundred fifty".