640153602036302 has 8 divisors (see below), whose sum is σ = 960236743713912. Its totient is φ = 320074687465000.

The previous prime is 640153602036301. The next prime is 640153602036371. The reversal of 640153602036302 is 203630206351046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×640153602036302² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 640153602036302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640153602036301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056397949 + ... + 1057003752.

It is an arithmetic number, because the mean of its divisors is an integer number (120029592964239).

Almost surely, 2^{640153602036302} is an apocalyptic number.

640153602036302 is a deficient number, since it is larger than the sum of its proper divisors (320083141677610).

640153602036302 is a wasteful number, since it uses less digits than its factorization.

640153602036302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113553154.

The product of its (nonzero) digits is 466560, while the sum is 41.

Adding to 640153602036302 its reverse (203630206351046), we get a palindrome (843783808387348).

The spelling of 640153602036302 in words is "six hundred forty trillion, one hundred fifty-three billion, six hundred two million, thirty-six thousand, three hundred two".