641124644023500 has 384 divisors, whose sum is σ = 2298183263760384. Its totient is φ = 135247145932800.

The previous prime is 641124644023489. The next prime is 641124644023517. The reversal of 641124644023500 is 5320446421146.

It is a super-2 number, since 2×641124644023500² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 804542257 + ... + 805338743.

It is an arithmetic number, because the mean of its divisors is an integer number (5984852249376).

Almost surely, 2^{641124644023500} is an apocalyptic number.

641124644023500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641124644023500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149091631880192).

641124644023500 is an abundant number, since it is smaller than the sum of its proper divisors (1657058619736884).

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

641124644023500 is a wasteful number, since it uses less digits than its factorization.

641124644023500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802426 (or 802414 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 641124644023500 in words is "six hundred forty-one trillion, one hundred twenty-four billion, six hundred forty-four million, twenty-three thousand, five hundred".