10115551500 has 96 divisors (see below), whose sum is σ = 30083429376. Its totient is φ = 2640068800.

The previous prime is 10115551487. The next prime is 10115551513. The reversal of 10115551500 is 515551101.

It is an interprime number because it is at equal distance from previous prime (10115551487) and next prime (10115551513).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1242 + ... + 142241.

It is an arithmetic number, because the mean of its divisors is an integer number (313369056).

Almost surely, 2^10115551500 is an apocalyptic number.

10115551500 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 10115551500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15041714688).

10115551500 is an abundant number, since it is smaller than the sum of its proper divisors (19967877876).

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

10115551500 is a wasteful number, since it uses less digits than its factorization.

10115551500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143552 (or 143540 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 24.

The spelling of 10115551500 in words is "ten billion, one hundred fifteen million, five hundred fifty-one thousand, five hundred".