1101250001550 has 48 divisors (see below), whose sum is σ = 2849843491200. Its totient is φ = 280898550240.

The previous prime is 1101250001531. The next prime is 1101250001561. The reversal of 1101250001550 is 551000521011.

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, 159598000 + ... + 159604899.

It is an arithmetic number, because the mean of its divisors is an integer number (59371739400).

Almost surely, 2^{1101250001550} is an apocalyptic number.

1101250001550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1101250001550 is an abundant number, since it is smaller than the sum of its proper divisors (1748593489650).

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

1101250001550 is a wasteful number, since it uses less digits than its factorization.

1101250001550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319202937 (or 319202932 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

Adding to 1101250001550 its reverse (551000521011), we get a palindrome (1652250522561).

The spelling of 1101250001550 in words is "one trillion, one hundred one billion, two hundred fifty million, one thousand, five hundred fifty".