20155512125435 has 16 divisors (see below), whose sum is σ = 24237781632000. Its totient is φ = 16090329464160.

The previous prime is 20155512125429. The next prime is 20155512125449. The reversal of 20155512125435 is 53452121555102.

It is not a de Polignac number, because 20155512125435 - 2¹⁰ = 20155512124411 is a prime.

It is a super-2 number, since 2×20155512125435² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20155512125392 and 20155512125401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3233174 + ... + 7124916.

It is an arithmetic number, because the mean of its divisors is an integer number (1514861352000).

Almost surely, 2^{20155512125435} is an apocalyptic number.

20155512125435 is a deficient number, since it is larger than the sum of its proper divisors (4082269506565).

20155512125435 is a wasteful number, since it uses less digits than its factorization.

20155512125435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893938.

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 20155512125435 in words is "twenty trillion, one hundred fifty-five billion, five hundred twelve million, one hundred twenty-five thousand, four hundred thirty-five".