63145891471 has 16 divisors (see below), whose sum is σ = 70701998080. Its totient is φ = 56002376160.

The previous prime is 63145891453. The next prime is 63145891477. The reversal of 63145891471 is 17419854136.

It is a cyclic number.

It is not a de Polignac number, because 63145891471 - 2¹¹ = 63145889423 is a prime.

It is a super-3 number, since 3×63145891471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63145891477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507615 + ... + 619648.

It is an arithmetic number, because the mean of its divisors is an integer number (4418874880).

Almost surely, 2^63145891471 is an apocalyptic number.

63145891471 is a deficient number, since it is larger than the sum of its proper divisors (7556106609).

63145891471 is a wasteful number, since it uses less digits than its factorization.

63145891471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127446.

The product of its digits is 725760, while the sum is 49.

The spelling of 63145891471 in words is "sixty-three billion, one hundred forty-five million, eight hundred ninety-one thousand, four hundred seventy-one".