401181265727628 has 12 divisors (see below), whose sum is σ = 936089620031160. Its totient is φ = 133727088575872.

The previous prime is 401181265727611. The next prime is 401181265727639. The reversal of 401181265727628 is 826727562181104.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16715886071973 + ... + 16715886071996.

It is an arithmetic number, because the mean of its divisors is an integer number (78007468335930).

Almost surely, 2^{401181265727628} is an apocalyptic number.

It is an amenable number.

401181265727628 is an abundant number, since it is smaller than the sum of its proper divisors (534908354303532).

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

401181265727628 is a wasteful number, since it uses less digits than its factorization.

401181265727628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33431772143976 (or 33431772143974 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 401181265727628 in words is "four hundred one trillion, one hundred eighty-one billion, two hundred sixty-five million, seven hundred twenty-seven thousand, six hundred twenty-eight".