401266344420 has 48 divisors (see below), whose sum is σ = 1248384184320. Its totient is φ = 107004358368.

The previous prime is 401266344407. The next prime is 401266344431. The reversal of 401266344420 is 24443662104.

401266344420 is a `hidden beast` number, since 4 + 0 + 12 + 6 + 634 + 4 + 4 + 2 + 0 = 666.

It is a super-2 number, since 2×401266344420² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 371542372 + ... + 371543451.

It is an arithmetic number, because the mean of its divisors is an integer number (26008003840).

Almost surely, 2^401266344420 is an apocalyptic number.

It is an amenable number.

401266344420 is an abundant number, since it is smaller than the sum of its proper divisors (847117839900).

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

401266344420 is a wasteful number, since it uses less digits than its factorization.

401266344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743085841 (or 743085833 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 401266344420 in words is "four hundred one billion, two hundred sixty-six million, three hundred forty-four thousand, four hundred twenty".