202878679788 has 72 divisors (see below), whose sum is σ = 541026486000. Its totient is φ = 63924166656.

The previous prime is 202878679741. The next prime is 202878679823. The reversal of 202878679788 is 887976878202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23181 + ... + 637412.

It is an arithmetic number, because the mean of its divisors is an integer number (7514256750).

Almost surely, 2^202878679788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202878679788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270513243000).

202878679788 is an abundant number, since it is smaller than the sum of its proper divisors (338147806212).

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

202878679788 is a wasteful number, since it uses less digits than its factorization.

202878679788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661071 (or 661066 counting only the distinct ones).

The product of its (nonzero) digits is 303464448, while the sum is 72.

The spelling of 202878679788 in words is "two hundred two billion, eight hundred seventy-eight million, six hundred seventy-nine thousand, seven hundred eighty-eight".