401709249072 has 80 divisors (see below), whose sum is σ = 1153134766080. Its totient is φ = 133893741888.

The previous prime is 401709249023. The next prime is 401709249107. The reversal of 401709249072 is 270942907104.

It is a happy number.

401709249072 is a `hidden beast` number, since 4 + 0 + 1 + 7 + 0 + 92 + 490 + 72 = 666.

It is a super-2 number, since 2×401709249072² (a number of 24 digits) contains 22 as substring.

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, 9215713 + ... + 9259199.

It is an arithmetic number, because the mean of its divisors is an integer number (14414184576).

Almost surely, 2^401709249072 is an apocalyptic number.

It is an amenable number.

401709249072 is an abundant number, since it is smaller than the sum of its proper divisors (751425517008).

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

401709249072 is a wasteful number, since it uses less digits than its factorization.

401709249072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64887 (or 64875 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 401709249072 in words is "four hundred one billion, seven hundred nine million, two hundred forty-nine thousand, seventy-two".