20413693755 has 288 divisors, whose sum is σ = 47406026304. Its totient is φ = 8026324992.

The previous prime is 20413693753. The next prime is 20413693777. The reversal of 20413693755 is 55739631402.

20413693755 is a `hidden beast` number, since 204 + 1 + 369 + 37 + 55 = 666.

It is not a de Polignac number, because 20413693755 - 2¹ = 20413693753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20413693755.

It is not an unprimeable number, because it can be changed into a prime (20413693753) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 79430587 + ... + 79430843.

It is an arithmetic number, because the mean of its divisors is an integer number (164604258).

Almost surely, 2^20413693755 is an apocalyptic number.

20413693755 is an abundant number, since it is smaller than the sum of its proper divisors (26992332549).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20413693755 is a wasteful number, since it uses less digits than its factorization.

20413693755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 20413693755 in words is "twenty billion, four hundred thirteen million, six hundred ninety-three thousand, seven hundred fifty-five".