20177492192 has 96 divisors (see below), whose sum is σ = 46718622720. Its totient is φ = 8457131520.

The previous prime is 20177492191. The next prime is 20177492213. The reversal of 20177492192 is 29129477102.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20177492191) 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, 6034073 + ... + 6037415.

It is an arithmetic number, because the mean of its divisors is an integer number (486652320).

Almost surely, 2^20177492192 is an apocalyptic number.

20177492192 is a gapful number since it is divisible by the number (22) 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 20177492192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23359311360).

20177492192 is an abundant number, since it is smaller than the sum of its proper divisors (26541130528).

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

20177492192 is a wasteful number, since it uses less digits than its factorization.

20177492192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 20177492192 in words is "twenty billion, one hundred seventy-seven million, four hundred ninety-two thousand, one hundred ninety-two".