161115511660510 has 16 divisors (see below), whose sum is σ = 316372277442672. Its totient is φ = 58587458785600.

The previous prime is 161115511660463. The next prime is 161115511660613. The reversal of 161115511660510 is 15066115511161.

It is a happy number.

161115511660510 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 732343234711 + ... + 732343234930.

It is an arithmetic number, because the mean of its divisors is an integer number (19773267340167).

Almost surely, 2^{161115511660510} is an apocalyptic number.

161115511660510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161115511660510 is a deficient number, since it is larger than the sum of its proper divisors (155256765782162).

161115511660510 is a wasteful number, since it uses less digits than its factorization.

161115511660510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464686469659.

The product of its (nonzero) digits is 27000, while the sum is 40.

The spelling of 161115511660510 in words is "one hundred sixty-one trillion, one hundred fifteen billion, five hundred eleven million, six hundred sixty thousand, five hundred ten".