400717272550 has 24 divisors (see below), whose sum is σ = 851810431536. Its totient is φ = 137388779040.

The previous prime is 400717272541. The next prime is 400717272563. The reversal of 400717272550 is 55272717004.

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, 572452897 + ... + 572453596.

It is an arithmetic number, because the mean of its divisors is an integer number (35492101314).

Almost surely, 2^400717272550 is an apocalyptic number.

400717272550 is an abundant number, since it is smaller than the sum of its proper divisors (451093158986).

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

400717272550 is a wasteful number, since it uses less digits than its factorization.

400717272550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144906512 (or 1144906507 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 40.

Adding to 400717272550 its reverse (55272717004), we get a palindrome (455989989554).

The spelling of 400717272550 in words is "four hundred billion, seven hundred seventeen million, two hundred seventy-two thousand, five hundred fifty".