161510161142 has 16 divisors (see below), whose sum is σ = 268011742464. Its totient is φ = 72379713000.

The previous prime is 161510161139. The next prime is 161510161243. The reversal of 161510161142 is 241161015161.

It is a super-2 number, since 2×161510161142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51698234 + ... + 51701357.

It is an arithmetic number, because the mean of its divisors is an integer number (16750733904).

Almost surely, 2^161510161142 is an apocalyptic number.

161510161142 is a deficient number, since it is larger than the sum of its proper divisors (106501581322).

161510161142 is a wasteful number, since it uses less digits than its factorization.

161510161142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103399675.

The product of its (nonzero) digits is 1440, while the sum is 29.

The spelling of 161510161142 in words is "one hundred sixty-one billion, five hundred ten million, one hundred sixty-one thousand, one hundred forty-two".