161562502102 has 4 divisors (see below), whose sum is σ = 242343753156. Its totient is φ = 80781251050.

The previous prime is 161562502091. The next prime is 161562502103. The reversal of 161562502102 is 201205265161.

161562502102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×161562502102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161562502103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390625524 + ... + 40390625527.

It is an arithmetic number, because the mean of its divisors is an integer number (60585938289).

Almost surely, 2^161562502102 is an apocalyptic number.

161562502102 is a deficient number, since it is larger than the sum of its proper divisors (80781251054).

161562502102 is an equidigital number, since it uses as much as digits as its factorization.

161562502102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80781251053.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 161562502102 its reverse (201205265161), we get a palindrome (362767767263).

The spelling of 161562502102 in words is "one hundred sixty-one billion, five hundred sixty-two million, five hundred two thousand, one hundred two".