20146573331643 has 64 divisors (see below), whose sum is σ = 31292815859712. Its totient is φ = 11406289466880.

The previous prime is 20146573331627. The next prime is 20146573331681. The reversal of 20146573331643 is 34613337564102.

It is not a de Polignac number, because 20146573331643 - 2⁴ = 20146573331627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20146573331592 and 20146573331601.

It is not an unprimeable number, because it can be changed into a prime (20146573331243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 344845971 + ... + 344904387.

It is an arithmetic number, because the mean of its divisors is an integer number (488950247808).

Almost surely, 2^{20146573331643} is an apocalyptic number.

20146573331643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20146573331643 is a deficient number, since it is larger than the sum of its proper divisors (11146242528069).

20146573331643 is a wasteful number, since it uses less digits than its factorization.

20146573331643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69064.

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 20146573331643 in words is "twenty trillion, one hundred forty-six billion, five hundred seventy-three million, three hundred thirty-one thousand, six hundred forty-three".