161522071500705 has 32 divisors (see below), whose sum is σ = 258511658284800. Its totient is φ = 86119660561152.

The previous prime is 161522071500641. The next prime is 161522071500737. The reversal of 161522071500705 is 507005170225161.

It is not a de Polignac number, because 161522071500705 - 2⁶ = 161522071500641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739870756 + ... + 740089034.

It is an arithmetic number, because the mean of its divisors is an integer number (8078489321400).

Almost surely, 2^{161522071500705} is an apocalyptic number.

161522071500705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161522071500705 is a deficient number, since it is larger than the sum of its proper divisors (96989586784095).

161522071500705 is a wasteful number, since it uses less digits than its factorization.

161522071500705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232633.

The product of its (nonzero) digits is 147000, while the sum is 42.

The spelling of 161522071500705 in words is "one hundred sixty-one trillion, five hundred twenty-two billion, seventy-one million, five hundred thousand, seven hundred five".