1023652421100 has 324 divisors, whose sum is σ = 3449562198264. Its totient is φ = 253815951360.

The previous prime is 1023652421059. The next prime is 1023652421147. The reversal of 1023652421100 is 11242563201.

1023652421100 is a `hidden beast` number, since 1 + 0 + 2 + 3 + 652 + 4 + 2 + 1 + 1 + 0 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 21564592 + ... + 21612008.

Almost surely, 2^{1023652421100} is an apocalyptic number.

1023652421100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023652421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724781099132).

1023652421100 is an abundant number, since it is smaller than the sum of its proper divisors (2425909777164).

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

1023652421100 is a wasteful number, since it uses less digits than its factorization.

1023652421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47554 (or 47527 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1023652421100 its reverse (11242563201), we get a palindrome (1034894984301).

The spelling of 1023652421100 in words is "one trillion, twenty-three billion, six hundred fifty-two million, four hundred twenty-one thousand, one hundred".