4129953728520 has 64 divisors (see below), whose sum is σ = 12444442153920. Its totient is φ = 1096469352704.

The previous prime is 4129953728507. The next prime is 4129953728539. The reversal of 4129953728520 is 258273599214.

It is a super-2 number, since 2×4129953728520² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 75779547 + ... + 75834026.

It is an arithmetic number, because the mean of its divisors is an integer number (194444408655).

Almost surely, 2^{4129953728520} is an apocalyptic number.

4129953728520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4129953728520 is an abundant number, since it is smaller than the sum of its proper divisors (8314488425400).

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

4129953728520 is a wasteful number, since it uses less digits than its factorization.

4129953728520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151613814 (or 151613810 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 4129953728520 in words is "four trillion, one hundred twenty-nine billion, nine hundred fifty-three million, seven hundred twenty-eight thousand, five hundred twenty".