400642602460 has 12 divisors (see below), whose sum is σ = 841349465208. Its totient is φ = 160257040976.

The previous prime is 400642602361. The next prime is 400642602463. The reversal of 400642602460 is 64206246004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400642602463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10016065042 + ... + 10016065081.

It is an arithmetic number, because the mean of its divisors is an integer number (70112455434).

Almost surely, 2^400642602460 is an apocalyptic number.

It is an amenable number.

400642602460 is an abundant number, since it is smaller than the sum of its proper divisors (440706862748).

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

400642602460 is a wasteful number, since it uses less digits than its factorization.

400642602460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20032130132 (or 20032130130 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 400642602460 its reverse (64206246004), we get a palindrome (464848848464).

The spelling of 400642602460 in words is "four hundred billion, six hundred forty-two million, six hundred two thousand, four hundred sixty".