400472772550 has 24 divisors (see below), whose sum is σ = 770564854800. Its totient is φ = 154665346080.

The previous prime is 400472772547. The next prime is 400472772569. The reversal of 400472772550 is 55277274004.

It is a junction number, because it is equal to n+sod(n) for n = 400472772497 and 400472772506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138092610 + ... + 138095509.

It is an arithmetic number, because the mean of its divisors is an integer number (32106868950).

Almost surely, 2^400472772550 is an apocalyptic number.

400472772550 is a deficient number, since it is larger than the sum of its proper divisors (370092082250).

400472772550 is a wasteful number, since it uses less digits than its factorization.

400472772550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276188160 (or 276188155 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 43.

The spelling of 400472772550 in words is "four hundred billion, four hundred seventy-two million, seven hundred seventy-two thousand, five hundred fifty".