401953811382 has 144 divisors (see below), whose sum is σ = 932556663792. Its totient is φ = 125097369600.

The previous prime is 401953811359. The next prime is 401953811393. The reversal of 401953811382 is 283118359104.

401953811382 is a `hidden beast` number, since 4 + 0 + 195 + 3 + 81 + 1 + 382 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 486038053 + ... + 486038879.

It is an arithmetic number, because the mean of its divisors is an integer number (6476087943).

Almost surely, 2^401953811382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401953811382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466278331896).

401953811382 is an abundant number, since it is smaller than the sum of its proper divisors (530602852410).

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

401953811382 is a wasteful number, since it uses less digits than its factorization.

401953811382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 401953811382 in words is "four hundred one billion, nine hundred fifty-three million, eight hundred eleven thousand, three hundred eighty-two".