641295299370 has 192 divisors, whose sum is σ = 1714204767744. Its totient is φ = 152247392640.

The previous prime is 641295299341. The next prime is 641295299413. The reversal of 641295299370 is 73992592146.

It is a super-2 number, since 2×641295299370² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 641295299370.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1692071841 + ... + 1692072219.

It is an arithmetic number, because the mean of its divisors is an integer number (8928149832).

Almost surely, 2^641295299370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641295299370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857102383872).

641295299370 is an abundant number, since it is smaller than the sum of its proper divisors (1072909468374).

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

641295299370 is a wasteful number, since it uses less digits than its factorization.

641295299370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 641295299370 in words is "six hundred forty-one billion, two hundred ninety-five million, two hundred ninety-nine thousand, three hundred seventy".