161490333735 has 24 divisors (see below), whose sum is σ = 279995025024. Its totient is φ = 86104040640.

The previous prime is 161490333673. The next prime is 161490333761. The reversal of 161490333735 is 537333094161.

161490333735 is a `hidden beast` number, since 1 + 61 + 490 + 3 + 33 + 73 + 5 = 666.

It is not a de Polignac number, because 161490333735 - 2⁸ = 161490333479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339927 + ... + 662216.

It is an arithmetic number, because the mean of its divisors is an integer number (11666459376).

Almost surely, 2^161490333735 is an apocalyptic number.

161490333735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161490333735 is a deficient number, since it is larger than the sum of its proper divisors (118504691289).

161490333735 is a wasteful number, since it uses less digits than its factorization.

161490333735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005735 (or 1005732 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 161490333735 in words is "one hundred sixty-one billion, four hundred ninety million, three hundred thirty-three thousand, seven hundred thirty-five".