68892942447 has 32 divisors (see below), whose sum is σ = 116660198400. Its totient is φ = 39361974624.

The previous prime is 68892942431. The next prime is 68892942463. The reversal of 68892942447 is 74424929886.

68892942447 is a `hidden beast` number, since 6 + 88 + 92 + 9 + 424 + 47 = 666.

It is an interprime number because it is at equal distance from previous prime (68892942431) and next prime (68892942463).

It is not a de Polignac number, because 68892942447 - 2⁴ = 68892942431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68892942407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1643829 + ... + 1685217.

It is an arithmetic number, because the mean of its divisors is an integer number (3645631200).

Almost surely, 2^68892942447 is an apocalyptic number.

68892942447 is a deficient number, since it is larger than the sum of its proper divisors (47767255953).

68892942447 is a wasteful number, since it uses less digits than its factorization.

68892942447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50212 (or 50206 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 63.

The spelling of 68892942447 in words is "sixty-eight billion, eight hundred ninety-two million, nine hundred forty-two thousand, four hundred forty-seven".