20135037344655 has 8 divisors (see below), whose sum is σ = 32216059751472. Its totient is φ = 10738686583808.

The previous prime is 20135037344581. The next prime is 20135037344657. The reversal of 20135037344655 is 55644373053102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20135037344655 - 2²³ = 20135028956047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135037344657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671167911474 + ... + 671167911503.

It is an arithmetic number, because the mean of its divisors is an integer number (4027007468934).

Almost surely, 2^{20135037344655} is an apocalyptic number.

20135037344655 is a deficient number, since it is larger than the sum of its proper divisors (12081022406817).

20135037344655 is a wasteful number, since it uses less digits than its factorization.

20135037344655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342335822985.

The product of its (nonzero) digits is 4536000, while the sum is 48.

The spelling of 20135037344655 in words is "twenty trillion, one hundred thirty-five billion, thirty-seven million, three hundred forty-four thousand, six hundred fifty-five".