401709143880 has 1536 divisors, whose sum is σ = 1698859008000. Its totient is φ = 83756851200.

The previous prime is 401709143839. The next prime is 401709143881. The reversal of 401709143880 is 88341907104.

It is a happy number.

401709143880 is a `hidden beast` number, since 40 + 17 + 0 + 91 + 438 + 80 = 666.

It is a super-2 number, since 2×401709143880² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (401709143881) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1308498687 + ... + 1308498993.

It is an arithmetic number, because the mean of its divisors is an integer number (1106028000).

Almost surely, 2^401709143880 is an apocalyptic number.

401709143880 is a gapful number since it is divisible by the number (40) 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 401709143880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849429504000).

401709143880 is an abundant number, since it is smaller than the sum of its proper divisors (1297149864120).

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

401709143880 is a wasteful number, since it uses less digits than its factorization.

401709143880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 401709143880 in words is "four hundred one billion, seven hundred nine million, one hundred forty-three thousand, eight hundred eighty".