400155020526 has 32 divisors (see below), whose sum is σ = 844042515840. Its totient is φ = 126123109344.

The previous prime is 400155020513. The next prime is 400155020527. The reversal of 400155020526 is 625020551004.

400155020526 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 400155020493 and 400155020502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400155020527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3296145 + ... + 3415388.

It is an arithmetic number, because the mean of its divisors is an integer number (26376328620).

Almost surely, 2^400155020526 is an apocalyptic number.

400155020526 is an abundant number, since it is smaller than the sum of its proper divisors (443887495314).

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

400155020526 is a wasteful number, since it uses less digits than its factorization.

400155020526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6712080.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 400155020526 in words is "four hundred billion, one hundred fifty-five million, twenty thousand, five hundred twenty-six".