169979000100 has 432 divisors, whose sum is σ = 610570920960. Its totient is φ = 35749209600.

The previous prime is 169979000071. The next prime is 169979000101. The reversal of 169979000100 is 1000979961.

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

It is not an unprimeable number, because it can be changed into a prime (169979000101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 155800555 + ... + 155801645.

Almost surely, 2^169979000100 is an apocalyptic number.

169979000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169979000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305285460480).

169979000100 is an abundant number, since it is smaller than the sum of its proper divisors (440591920860).

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

169979000100 is a wasteful number, since it uses less digits than its factorization.

169979000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 42.

The spelling of 169979000100 in words is "one hundred sixty-nine billion, nine hundred seventy-nine million, one hundred", and thus it is an aban number.