1015123245210 has 128 divisors (see below), whose sum is σ = 2825150607360. Its totient is φ = 258887838528.

The previous prime is 1015123245127. The next prime is 1015123245211. The reversal of 1015123245210 is 125423215101.

It is a happy number.

1015123245210 is a `hidden beast` number, since 1 + 0 + 15 + 123 + 2 + 4 + 521 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1015123245211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59750337 + ... + 59767323.

It is an arithmetic number, because the mean of its divisors is an integer number (22071489120).

Almost surely, 2^{1015123245210} is an apocalyptic number.

1015123245210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1015123245210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412575303680).

1015123245210 is an abundant number, since it is smaller than the sum of its proper divisors (1810027362150).

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

1015123245210 is a wasteful number, since it uses less digits than its factorization.

1015123245210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26649 (or 26643 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 1015123245210 in words is "one trillion, fifteen billion, one hundred twenty-three million, two hundred forty-five thousand, two hundred ten".