168217552477380 has 192 divisors, whose sum is σ = 538779136186368. Its totient is φ = 38415244446720.

The previous prime is 168217552477379. The next prime is 168217552477463. The reversal of 168217552477380 is 83774255712861.

It is a super-2 number, since 2×168217552477380² (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 63 ways as a sum of consecutive naturals, for example, 2148799719 + ... + 2148878001.

It is an arithmetic number, because the mean of its divisors is an integer number (2806141334304).

Almost surely, 2^{168217552477380} is an apocalyptic number.

168217552477380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168217552477380 is an abundant number, since it is smaller than the sum of its proper divisors (370561583708988).

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

168217552477380 is a wasteful number, since it uses less digits than its factorization.

168217552477380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82826 (or 82824 counting only the distinct ones).

The product of its (nonzero) digits is 158054400, while the sum is 66.

The spelling of 168217552477380 in words is "one hundred sixty-eight trillion, two hundred seventeen billion, five hundred fifty-two million, four hundred seventy-seven thousand, three hundred eighty".