400641769756 has 24 divisors (see below), whose sum is σ = 705097348704. Its totient is φ = 199186391040.

The previous prime is 400641769751. The next prime is 400641769777. The reversal of 400641769756 is 657967146004.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 400641769697 and 400641769706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400641769751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481841 + ... + 1731223.

It is an arithmetic number, because the mean of its divisors is an integer number (29379056196).

Almost surely, 2^400641769756 is an apocalyptic number.

It is an amenable number.

400641769756 is a deficient number, since it is larger than the sum of its proper divisors (304455578948).

400641769756 is a wasteful number, since it uses less digits than its factorization.

400641769756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251661 (or 251659 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 400641769756 in words is "four hundred billion, six hundred forty-one million, seven hundred sixty-nine thousand, seven hundred fifty-six".