1285113523100 has 72 divisors (see below), whose sum is σ = 3057502224000. Its totient is φ = 464965617600.

The previous prime is 1285113523081. The next prime is 1285113523189. The reversal of 1285113523100 is 13253115821.

It is a super-2 number, since 2×1285113523100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2716490 + ... + 3154289.

Almost surely, 2^{1285113523100} is an apocalyptic number.

1285113523100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285113523100 is an abundant number, since it is smaller than the sum of its proper divisors (1772388700900).

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

1285113523100 is a wasteful number, since it uses less digits than its factorization.

1285113523100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871003 (or 5870996 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 1285113523100 its reverse (13253115821), we get a palindrome (1298366638921).

The spelling of 1285113523100 in words is "one trillion, two hundred eighty-five billion, one hundred thirteen million, five hundred twenty-three thousand, one hundred".