201651034403240 has 64 divisors (see below), whose sum is σ = 454186964880000. Its totient is φ = 80576503937280.

The previous prime is 201651034403207. The next prime is 201651034403267. The reversal of 201651034403240 is 42304430156102.

It is a super-3 number, since 3×201651034403240³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201651034403240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252490466 + ... + 253287854.

It is an arithmetic number, because the mean of its divisors is an integer number (7096671326250).

Almost surely, 2^{201651034403240} is an apocalyptic number.

201651034403240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201651034403240 is an abundant number, since it is smaller than the sum of its proper divisors (252535930476760).

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

201651034403240 is a wasteful number, since it uses less digits than its factorization.

201651034403240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803970 (or 803966 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 201651034403240 its reverse (42304430156102), we get a palindrome (243955464559342).

The spelling of 201651034403240 in words is "two hundred one trillion, six hundred fifty-one billion, thirty-four million, four hundred three thousand, two hundred forty".