1001153235400 has 48 divisors (see below), whose sum is σ = 2342507341140. Its totient is φ = 397910572800.

The previous prime is 1001153235331. The next prime is 1001153235403. The reversal of 1001153235400 is 45323511001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 252765606564 + 748387628836 = 502758^2 + 865094^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1001153235403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15910531 + ... + 15973330.

Almost surely, 2^{1001153235400} is an apocalyptic number.

1001153235400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001153235400 is an abundant number, since it is smaller than the sum of its proper divisors (1341354105740).

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

1001153235400 is a wasteful number, since it uses less digits than its factorization.

1001153235400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31884034 (or 31884025 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1001153235400 its reverse (45323511001), we get a palindrome (1046476746401).

The spelling of 1001153235400 in words is "one trillion, one billion, one hundred fifty-three million, two hundred thirty-five thousand, four hundred".