1020245153505 has 32 divisors (see below), whose sum is σ = 1712881935360. Its totient is φ = 517565188800.

The previous prime is 1020245153503. The next prime is 1020245153507. The reversal of 1020245153505 is 5053515420201.

It is an interprime number because it is at equal distance from previous prime (1020245153503) and next prime (1020245153507).

It is not a de Polignac number, because 1020245153505 - 2¹ = 1020245153503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020245153503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8198671 + ... + 8322180.

It is an arithmetic number, because the mean of its divisors is an integer number (53527560480).

Almost surely, 2^{1020245153505} is an apocalyptic number.

1020245153505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020245153505 is a deficient number, since it is larger than the sum of its proper divisors (692636781855).

1020245153505 is a wasteful number, since it uses less digits than its factorization.

1020245153505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16521061.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 1020245153505 in words is "one trillion, twenty billion, two hundred forty-five million, one hundred fifty-three thousand, five hundred five".