20135741402537 has 4 divisors (see below), whose sum is σ = 20135793428820. Its totient is φ = 20135689376256.

The previous prime is 20135741402531. The next prime is 20135741402549. The reversal of 20135741402537 is 73520414753102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8168043964441 + 11967697438096 = 2857979^2 + 3459436^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135741402537 - 2⁶ = 20135741402473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135741402531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25428212 + ... + 26208117.

It is an arithmetic number, because the mean of its divisors is an integer number (5033948357205).

Almost surely, 2^{20135741402537} is an apocalyptic number.

It is an amenable number.

20135741402537 is a deficient number, since it is larger than the sum of its proper divisors (52026283).

20135741402537 is an equidigital number, since it uses as much as digits as its factorization.

20135741402537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52026282.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 20135741402537 in words is "twenty trillion, one hundred thirty-five billion, seven hundred forty-one million, four hundred two thousand, five hundred thirty-seven".