1000401522388 has 12 divisors (see below), whose sum is σ = 1750780386432. Its totient is φ = 500178554840.

The previous prime is 1000401522359. The next prime is 1000401522389. The reversal of 1000401522388 is 8832251040001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000401522389) 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, 5450020 + ... + 5630587.

It is an arithmetic number, because the mean of its divisors is an integer number (145898365536).

Almost surely, 2^{1000401522388} is an apocalyptic number.

It is an amenable number.

1000401522388 is a deficient number, since it is larger than the sum of its proper divisors (750378864044).

1000401522388 is a wasteful number, since it uses less digits than its factorization.

1000401522388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11103182 (or 11103180 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

Adding to 1000401522388 its reverse (8832251040001), we get a palindrome (9832652562389).

The spelling of 1000401522388 in words is "one trillion, four hundred one million, five hundred twenty-two thousand, three hundred eighty-eight".