161213001510 has 64 divisors (see below), whose sum is σ = 431900916480. Its totient is φ = 38173054080.

The previous prime is 161213001503. The next prime is 161213001539. The reversal of 161213001510 is 15100312161.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5666325 + ... + 5694704.

It is an arithmetic number, because the mean of its divisors is an integer number (6748451820).

Almost surely, 2^161213001510 is an apocalyptic number.

161213001510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161213001510 is an abundant number, since it is smaller than the sum of its proper divisors (270687914970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161213001510 is a wasteful number, since it uses less digits than its factorization.

161213001510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361093.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 161213001510 its reverse (15100312161), we get a palindrome (176313313671).

The spelling of 161213001510 in words is "one hundred sixty-one billion, two hundred thirteen million, one thousand, five hundred ten".