202101302440 has 16 divisors (see below), whose sum is σ = 454727930580. Its totient is φ = 80840520960.

The previous prime is 202101302423. The next prime is 202101302449. The reversal of 202101302440 is 44203101202.

It can be written as a sum of positive squares in 2 ways, for example, as 192129682276 + 9971620164 = 438326^2 + 99858^2 .

It is not an unprimeable number, because it can be changed into a prime (202101302449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526266241 + ... + 2526266320.

Almost surely, 2^202101302440 is an apocalyptic number.

202101302440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101302440 is an abundant number, since it is smaller than the sum of its proper divisors (252626628140).

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

202101302440 is a wasteful number, since it uses less digits than its factorization.

202101302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052532572 (or 5052532568 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 202101302440 its reverse (44203101202), we get a palindrome (246304403642).

The spelling of 202101302440 in words is "two hundred two billion, one hundred one million, three hundred two thousand, four hundred forty".