202986878640 has 640 divisors, whose sum is σ = 800615424000. Its totient is φ = 42285874176.

The previous prime is 202986878621. The next prime is 202986878641. The reversal of 202986878640 is 46878689202.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202986878641) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2569454121 + ... + 2569454199.

It is an arithmetic number, because the mean of its divisors is an integer number (1250961600).

Almost surely, 2^202986878640 is an apocalyptic number.

202986878640 is a gapful number since it is divisible by the number (20) 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 202986878640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400307712000).

202986878640 is an abundant number, since it is smaller than the sum of its proper divisors (597628545360).

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

202986878640 is an frugal number, since it uses more digits than its factorization.

202986878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 202986878640 in words is "two hundred two billion, nine hundred eighty-six million, eight hundred seventy-eight thousand, six hundred forty".