161606611510 has 8 divisors (see below), whose sum is σ = 290891900736. Its totient is φ = 64642644600.

The previous prime is 161606611457. The next prime is 161606611553. The reversal of 161606611510 is 15116606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161606611510² (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 3 ways as a sum of consecutive naturals, for example, 8080330566 + ... + 8080330585.

It is an arithmetic number, because the mean of its divisors is an integer number (36361487592).

Almost surely, 2^161606611510 is an apocalyptic number.

161606611510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161606611510 is a deficient number, since it is larger than the sum of its proper divisors (129285289226).

161606611510 is a wasteful number, since it uses less digits than its factorization.

161606611510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160661158.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 161606611510 in words is "one hundred sixty-one billion, six hundred six million, six hundred eleven thousand, five hundred ten".