202654316634 has 128 divisors (see below), whose sum is σ = 516973363200. Its totient is φ = 51434316480.

The previous prime is 202654316621. The next prime is 202654316639. The reversal of 202654316634 is 436613456202.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202654316639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4529827 + ... + 4574345.

It is an arithmetic number, because the mean of its divisors is an integer number (4038854400).

Almost surely, 2^202654316634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202654316634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258486681600).

202654316634 is an abundant number, since it is smaller than the sum of its proper divisors (314319046566).

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

202654316634 is a wasteful number, since it uses less digits than its factorization.

202654316634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44768.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 202654316634 in words is "two hundred two billion, six hundred fifty-four million, three hundred sixteen thousand, six hundred thirty-four".