168563548600690 has 32 divisors (see below), whose sum is σ = 304068639873600. Its totient is φ = 67280133850944.

The previous prime is 168563548600663. The next prime is 168563548600691. The reversal of 168563548600690 is 96006845365861.

It is a super-2 number, since 2×168563548600690² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168563548600691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6502261 + ... + 19478359.

It is an arithmetic number, because the mean of its divisors is an integer number (9502144996050).

Almost surely, 2^{168563548600690} is an apocalyptic number.

168563548600690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168563548600690 is a deficient number, since it is larger than the sum of its proper divisors (135505091272910).

168563548600690 is a wasteful number, since it uses less digits than its factorization.

168563548600690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978906.

The product of its (nonzero) digits is 223948800, while the sum is 67.

The spelling of 168563548600690 in words is "one hundred sixty-eight trillion, five hundred sixty-three billion, five hundred forty-eight million, six hundred thousand, six hundred ninety".