163965290763690 has 384 divisors, whose sum is σ = 477802274197248. Its totient is φ = 38749708247040.

The previous prime is 163965290763689. The next prime is 163965290763719. The reversal of 163965290763690 is 96367092569361.

163965290763690 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 6 + 529 + 0 + 7 + 6 + 3 + 6 + 90 = 666.

It is a super-2 number, since 2×163965290763690² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4766000029 + ... + 4766034431.

It is an arithmetic number, because the mean of its divisors is an integer number (1244276755722).

Almost surely, 2^{163965290763690} is an apocalyptic number.

163965290763690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163965290763690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238901137098624).

163965290763690 is an abundant number, since it is smaller than the sum of its proper divisors (313836983433558).

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

163965290763690 is a wasteful number, since it uses less digits than its factorization.

163965290763690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36086 (or 36083 counting only the distinct ones).

The product of its (nonzero) digits is 595213920, while the sum is 72.

The spelling of 163965290763690 in words is "one hundred sixty-three trillion, nine hundred sixty-five billion, two hundred ninety million, seven hundred sixty-three thousand, six hundred ninety".