640202125350 has 96 divisors (see below), whose sum is σ = 1681331557536. Its totient is φ = 160655616000.

The previous prime is 640202125337. The next prime is 640202125351. The reversal of 640202125350 is 53521202046.

It is a super-2 number, since 2×640202125350² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640202125351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25234872 + ... + 25260228.

It is an arithmetic number, because the mean of its divisors is an integer number (17513870391).

Almost surely, 2^640202125350 is an apocalyptic number.

640202125350 is an abundant number, since it is smaller than the sum of its proper divisors (1041129432186).

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

640202125350 is a wasteful number, since it uses less digits than its factorization.

640202125350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35290 (or 35285 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 640202125350 its reverse (53521202046), we get a palindrome (693723327396).

The spelling of 640202125350 in words is "six hundred forty billion, two hundred two million, one hundred twenty-five thousand, three hundred fifty".