400720425623 has 16 divisors (see below), whose sum is σ = 503029240320. Its totient is φ = 311249337696.

The previous prime is 400720425617. The next prime is 400720425653. The reversal of 400720425623 is 326524027004.

It is a cyclic number.

It is not a de Polignac number, because 400720425623 - 2⁸ = 400720425367 is a prime.

It is a super-2 number, since 2×400720425623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400720425653) 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, 65495540 + ... + 65501657.

It is an arithmetic number, because the mean of its divisors is an integer number (31439327520).

Almost surely, 2^400720425623 is an apocalyptic number.

400720425623 is a deficient number, since it is larger than the sum of its proper divisors (102308814697).

400720425623 is a wasteful number, since it uses less digits than its factorization.

400720425623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130997246.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 400720425623 in words is "four hundred billion, seven hundred twenty million, four hundred twenty-five thousand, six hundred twenty-three".