161134521403650 has 48 divisors (see below), whose sum is σ = 399614661864000. Its totient is φ = 42969092935360.

The previous prime is 161134521403649. The next prime is 161134521403679. The reversal of 161134521403650 is 56304125431161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66947296 + ... + 69312404.

It is an arithmetic number, because the mean of its divisors is an integer number (8325305455500).

Almost surely, 2^{161134521403650} is an apocalyptic number.

161134521403650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161134521403650 is an abundant number, since it is smaller than the sum of its proper divisors (238480140460350).

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

161134521403650 is a wasteful number, since it uses less digits than its factorization.

161134521403650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819323 (or 2819318 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 161134521403650 in words is "one hundred sixty-one trillion, one hundred thirty-four billion, five hundred twenty-one million, four hundred three thousand, six hundred fifty".