20003555036145 has 32 divisors (see below), whose sum is σ = 32454385149312. Its totient is φ = 10519089449472.

The previous prime is 20003555036083. The next prime is 20003555036159. The reversal of 20003555036145 is 54163055530002.

It is not a de Polignac number, because 20003555036145 - 2¹⁷ = 20003554905073 is a prime.

It is a super-2 number, since 2×20003555036145² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575707 + ... + 6351263.

It is an arithmetic number, because the mean of its divisors is an integer number (1014199535916).

Almost surely, 2^{20003555036145} is an apocalyptic number.

It is an amenable number.

20003555036145 is a deficient number, since it is larger than the sum of its proper divisors (12450830113167).

20003555036145 is a wasteful number, since it uses less digits than its factorization.

20003555036145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778801.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 20003555036145 in words is "twenty trillion, three billion, five hundred fifty-five million, thirty-six thousand, one hundred forty-five".