161143754620 has 12 divisors (see below), whose sum is σ = 338401884744. Its totient is φ = 64457501840.

The previous prime is 161143754599. The next prime is 161143754621. The reversal of 161143754620 is 26457341161.

It is a super-3 number, since 3×161143754620³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161143754621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028593846 + ... + 4028593885.

It is an arithmetic number, because the mean of its divisors is an integer number (28200157062).

Almost surely, 2^161143754620 is an apocalyptic number.

161143754620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161143754620 is an abundant number, since it is smaller than the sum of its proper divisors (177258130124).

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

161143754620 is a wasteful number, since it uses less digits than its factorization.

161143754620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8057187740 (or 8057187738 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 161143754620 in words is "one hundred sixty-one billion, one hundred forty-three million, seven hundred fifty-four thousand, six hundred twenty".