20135101577125 has 8 divisors (see below), whose sum is σ = 25128606768408. Its totient is φ = 16108081261600.

The previous prime is 20135101577117. The next prime is 20135101577141. The reversal of 20135101577125 is 52177510153102.

It can be written as a sum of positive squares in 4 ways, for example, as 4611296696449 + 15523804880676 = 2147393^2 + 3940026^2 .

It is not a de Polignac number, because 20135101577125 - 2³ = 20135101577117 is a prime.

It is a super-2 number, since 2×20135101577125² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80540406184 + ... + 80540406433.

It is an arithmetic number, because the mean of its divisors is an integer number (3141075846051).

Almost surely, 2^{20135101577125} is an apocalyptic number.

20135101577125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20135101577125 is a deficient number, since it is larger than the sum of its proper divisors (4993505191283).

20135101577125 is an equidigital number, since it uses as much as digits as its factorization.

20135101577125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161080812632 (or 161080812622 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 20135101577125 in words is "twenty trillion, one hundred thirty-five billion, one hundred one million, five hundred seventy-seven thousand, one hundred twenty-five".