20135153551457 has 16 divisors (see below), whose sum is σ = 24012287173632. Its totient is φ = 16508201870160.

The previous prime is 20135153551309. The next prime is 20135153551483. The reversal of 20135153551457 is 75415535153102.

It is a de Polignac number, because none of the positive numbers 2^k-20135153551457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135153553457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25863782 + ... + 26630912.

It is an arithmetic number, because the mean of its divisors is an integer number (1500767948352).

Almost surely, 2^{20135153551457} is an apocalyptic number.

It is an amenable number.

20135153551457 is a deficient number, since it is larger than the sum of its proper divisors (3877133622175).

20135153551457 is a wasteful number, since it uses less digits than its factorization.

20135153551457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930188.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 20135153551457 in words is "twenty trillion, one hundred thirty-five billion, one hundred fifty-three million, five hundred fifty-one thousand, four hundred fifty-seven".