161777110614 has 96 divisors (see below), whose sum is σ = 395612729856. Its totient is φ = 43889408640.

The previous prime is 161777110613. The next prime is 161777110661. The reversal of 161777110614 is 416011777161.

It is a super-2 number, since 2×161777110614² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161777110613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 839079 + ... + 1013709.

It is an arithmetic number, because the mean of its divisors is an integer number (4120965936).

Almost surely, 2^161777110614 is an apocalyptic number.

161777110614 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161777110614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197806364928).

161777110614 is an abundant number, since it is smaller than the sum of its proper divisors (233835619242).

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

161777110614 is a wasteful number, since it uses less digits than its factorization.

161777110614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174810 (or 174803 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 42.

Adding to 161777110614 its reverse (416011777161), we get a palindrome (577788887775).

The spelling of 161777110614 in words is "one hundred sixty-one billion, seven hundred seventy-seven million, one hundred ten thousand, six hundred fourteen".