20067661575 has 96 divisors (see below), whose sum is σ = 41427348480. Its totient is φ = 9449827200.

The previous prime is 20067661567. The next prime is 20067661597. The reversal of 20067661575 is 57516676002.

20067661575 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 76 + 6 + 1 + 575 = 666.

It is not a de Polignac number, because 20067661575 - 2³ = 20067661567 is a prime.

It is a super-2 number, since 2×20067661575² (a number of 21 digits) contains 22 as substring.

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 20067661575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 152110 + ... + 251540.

It is an arithmetic number, because the mean of its divisors is an integer number (431534880).

Almost surely, 2^20067661575 is an apocalyptic number.

20067661575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20067661575 is an abundant number, since it is smaller than the sum of its proper divisors (21359686905).

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

20067661575 is a wasteful number, since it uses less digits than its factorization.

20067661575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99486 (or 99475 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 20067661575 in words is "twenty billion, sixty-seven million, six hundred sixty-one thousand, five hundred seventy-five".