401261407470 has 256 divisors, whose sum is σ = 1377100431360. Its totient is φ = 80689219200.

The previous prime is 401261407447. The next prime is 401261407577. The reversal of 401261407470 is 74704162104.

It is a happy number.

401261407470 is a `hidden beast` number, since 40 + 1 + 2 + 6 + 140 + 7 + 470 = 666.

It is a super-2 number, since 2×401261407470² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 333189 + ... + 955791.

It is an arithmetic number, because the mean of its divisors is an integer number (5379298560).

Almost surely, 2^401261407470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401261407470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688550215680).

401261407470 is an abundant number, since it is smaller than the sum of its proper divisors (975839023890).

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

401261407470 is a wasteful number, since it uses less digits than its factorization.

401261407470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622668 (or 622662 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

Adding to 401261407470 its reverse (74704162104), we get a palindrome (475965569574).

The spelling of 401261407470 in words is "four hundred one billion, two hundred sixty-one million, four hundred seven thousand, four hundred seventy".